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295 vulnerabilities found for python by Python
CVE-2026-7210 (GCVE-0-2026-7210)
Vulnerability from nvd – Published: 2026-05-11 17:19 – Updated: 2026-06-10 18:57
VLAI
Title
The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection
Summary
`xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-331 - Insufficient entropy
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.14
(python)
Affected: 3.14.0 , < 3.14.6 (python) Affected: 3.15.0a1 , < 3.15.0b2 (python) |
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CVE-2026-3087 (GCVE-0-2026-3087)
Vulnerability from nvd – Published: 2026-04-27 20:46 – Updated: 2026-06-10 18:04
VLAI
Title
shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs
Summary
If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
11 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.14
(python)
Affected: 3.14.0a1 , < 3.14.5rc1 (python) Affected: 3.15.0a1 , < 3.15.0b1 (python) |
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CVE-2026-6019 (GCVE-0-2026-6019)
Vulnerability from nvd – Published: 2026-04-22 19:28 – Updated: 2026-06-10 18:58
VLAI
Title
BaseCookie.js_output() does not neutralize embedded characters
Summary
http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence </script> inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-150 - Improper neutralization of escape, meta, or control sequences
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.14
(python)
Affected: 3.14.0a1 , < 3.14.5rc1 (python) Affected: 3.15.0a1 , < 3.15.0b1 (python) |
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CVE-2026-4519 (GCVE-0-2026-4519)
Vulnerability from nvd – Published: 2026-03-20 15:08 – Updated: 2026-04-13 21:47
VLAI
Title
webbrowser.open() allows leading dashes in URLs
Summary
The webbrowser.open() API would accept leading dashes in the URL which
could be handled as command line options for certain web browsers. New
behavior rejects leading dashes. Users are recommended to sanitize URLs
prior to passing to webbrowser.open().
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
16 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2026-4224 (GCVE-0-2026-4224)
Vulnerability from nvd – Published: 2026-03-16 17:52 – Updated: 2026-04-08 12:55
VLAI
Title
Stack overflow parsing XML with deeply nested DTD content models
Summary
When an Expat parser with a registered ElementDeclHandler parses an inline
document type definition containing a deeply nested content model a C stack
overflow occurs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2026-3644 (GCVE-0-2026-3644)
Vulnerability from nvd – Published: 2026-03-16 17:37 – Updated: 2026-04-07 22:01
VLAI
Title
Incomplete control character validation in http.cookies
Summary
The fix for CVE-2026-0672, which rejected control characters in http.cookies.Morsel, was incomplete. The Morsel.update(), |= operator, and unpickling paths were not patched, allowing control characters to bypass input validation. Additionally, BaseCookie.js_output() lacked the output validation applied to BaseCookie.output().
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2025-13462 (GCVE-0-2025-13462)
Vulnerability from nvd – Published: 2026-03-12 17:59 – Updated: 2026-06-04 14:02
VLAI
Title
tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling
Summary
The "tarfile" module would still apply normalization of AREGTYPE (\x00) blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPE_LONGNAME or GNUTYPE_LONGLINK. This could result in a crafted tar archive being misinterpreted by the tarfile module compared to other implementations.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2025-12781 (GCVE-0-2025-12781)
Vulnerability from nvd – Published: 2026-01-21 19:34 – Updated: 2026-01-22 20:12
VLAI
Title
base64.b64decode() always accepts "+/" characters, despite setting altchars
Summary
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This behavior can only be insecure if your application uses an alternate base64 alphabet (without "+/"). If your application does not use the "altchars" parameter or the urlsafe_b64decode() function, then your application does not use an alternative base64 alphabet.
The attached patches DOES NOT make the base64-decode behavior raise an error, as this would be a change in behavior and break existing programs. Instead, the patch deprecates the behavior which will be replaced with the newly recommended behavior in a future version of Python. Users are recommended to mitigate by verifying user-controlled inputs match the base64
alphabet they are expecting or verify that their application would not be
affected if the b64decode() functions accepted "+" or "/" outside of altchars.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-704 - Incorrect Type Conversion or Cast
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.10
(python)
Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0a2 (python) |
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CVE-2025-12084 (GCVE-0-2025-12084)
Vulnerability from nvd – Published: 2025-12-03 18:55 – Updated: 2026-03-03 14:41
VLAI
Title
Quadratic complexity in node ID cache clearing
Summary
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
14 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
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Credits
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CVE-2025-13836 (GCVE-0-2025-13836)
Vulnerability from nvd – Published: 2025-12-01 18:02 – Updated: 2026-03-03 14:41
VLAI
Title
Excessive read buffering DoS in http.client
Summary
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
Affected: 3.11.0 , < 3.11.15 (python) Affected: 3.12.0 , < 3.12.13 (python) Affected: 3.13.0 , < 3.13.11 (python) Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0a3 (python) |
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CVE-2025-13837 (GCVE-0-2025-13837)
Vulnerability from nvd – Published: 2025-12-01 18:13 – Updated: 2026-03-03 14:41
VLAI
Title
Out-of-memory when loading Plist
Summary
When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
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CVE-2025-6075 (GCVE-0-2025-6075)
Vulnerability from nvd – Published: 2025-10-31 16:41 – Updated: 2026-03-03 14:43
VLAI
Title
Quadratic complexity in os.path.expandvars() with user-controlled template
Summary
If the value passed to os.path.expandvars() is user-controlled a
performance degradation is possible when expanding environment
variables.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
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CVE-2024-9287 (GCVE-0-2024-9287)
Vulnerability from nvd – Published: 2024-10-22 16:34 – Updated: 2025-11-03 22:33
VLAI
Title
Virtual environment (venv) activation scripts don't quote paths
Summary
A vulnerability has been found in the CPython `venv` module and CLI where path names provided when creating a virtual environment were not quoted properly, allowing the creator to inject commands into virtual environment "activation" scripts (ie "source venv/bin/activate"). This means that attacker-controlled virtual environments are able to run commands when the virtual environment is activated. Virtual environments which are not created by an attacker or which aren't activated before being used (ie "./venv/bin/python") are not affected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-428 - Unquoted Search Path or Element
Assigner
References
12 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.21
(python)
Affected: 3.10.0 , < 3.10.16 (python) Affected: 3.11.0 , < 3.11.11 (python) Affected: 3.12.0 , < 3.12.8 (python) Affected: 3.13.0 , < 3.13.1 (python) Affected: 3.14.0a1 , < 3.14.0a2 (python) |
|
| python | cpython |
Affected:
0 , ≤ 3.13.0
(python)
cpe:2.3:a:python:cpython:*:*:*:*:*:*:*:* |
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CVE-2026-7210 (GCVE-0-2026-7210)
Vulnerability from cvelistv5 – Published: 2026-05-11 17:19 – Updated: 2026-06-10 18:57
VLAI
Title
The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection
Summary
`xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-331 - Insufficient entropy
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.14
(python)
Affected: 3.14.0 , < 3.14.6 (python) Affected: 3.15.0a1 , < 3.15.0b2 (python) |
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CVE-2026-3087 (GCVE-0-2026-3087)
Vulnerability from cvelistv5 – Published: 2026-04-27 20:46 – Updated: 2026-06-10 18:04
VLAI
Title
shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs
Summary
If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
11 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.14
(python)
Affected: 3.14.0a1 , < 3.14.5rc1 (python) Affected: 3.15.0a1 , < 3.15.0b1 (python) |
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CVE-2026-6019 (GCVE-0-2026-6019)
Vulnerability from cvelistv5 – Published: 2026-04-22 19:28 – Updated: 2026-06-10 18:58
VLAI
Title
BaseCookie.js_output() does not neutralize embedded characters
Summary
http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence </script> inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-150 - Improper neutralization of escape, meta, or control sequences
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
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Affected:
0 , < 3.13.14
(python)
Affected: 3.14.0a1 , < 3.14.5rc1 (python) Affected: 3.15.0a1 , < 3.15.0b1 (python) |
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CVE-2026-4519 (GCVE-0-2026-4519)
Vulnerability from cvelistv5 – Published: 2026-03-20 15:08 – Updated: 2026-04-13 21:47
VLAI
Title
webbrowser.open() allows leading dashes in URLs
Summary
The webbrowser.open() API would accept leading dashes in the URL which
could be handled as command line options for certain web browsers. New
behavior rejects leading dashes. Users are recommended to sanitize URLs
prior to passing to webbrowser.open().
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
16 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2026-4224 (GCVE-0-2026-4224)
Vulnerability from cvelistv5 – Published: 2026-03-16 17:52 – Updated: 2026-04-08 12:55
VLAI
Title
Stack overflow parsing XML with deeply nested DTD content models
Summary
When an Expat parser with a registered ElementDeclHandler parses an inline
document type definition containing a deeply nested content model a C stack
overflow occurs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2026-3644 (GCVE-0-2026-3644)
Vulnerability from cvelistv5 – Published: 2026-03-16 17:37 – Updated: 2026-04-07 22:01
VLAI
Title
Incomplete control character validation in http.cookies
Summary
The fix for CVE-2026-0672, which rejected control characters in http.cookies.Morsel, was incomplete. The Morsel.update(), |= operator, and unpickling paths were not patched, allowing control characters to bypass input validation. Additionally, BaseCookie.js_output() lacked the output validation applied to BaseCookie.output().
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2025-13462 (GCVE-0-2025-13462)
Vulnerability from cvelistv5 – Published: 2026-03-12 17:59 – Updated: 2026-06-04 14:02
VLAI
Title
tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling
Summary
The "tarfile" module would still apply normalization of AREGTYPE (\x00) blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPE_LONGNAME or GNUTYPE_LONGLINK. This could result in a crafted tar archive being misinterpreted by the tarfile module compared to other implementations.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.13
(python)
Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a8 (python) |
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CVE-2025-12781 (GCVE-0-2025-12781)
Vulnerability from cvelistv5 – Published: 2026-01-21 19:34 – Updated: 2026-01-22 20:12
VLAI
Title
base64.b64decode() always accepts "+/" characters, despite setting altchars
Summary
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This behavior can only be insecure if your application uses an alternate base64 alphabet (without "+/"). If your application does not use the "altchars" parameter or the urlsafe_b64decode() function, then your application does not use an alternative base64 alphabet.
The attached patches DOES NOT make the base64-decode behavior raise an error, as this would be a change in behavior and break existing programs. Instead, the patch deprecates the behavior which will be replaced with the newly recommended behavior in a future version of Python. Users are recommended to mitigate by verifying user-controlled inputs match the base64
alphabet they are expecting or verify that their application would not be
affected if the b64decode() functions accepted "+" or "/" outside of altchars.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-704 - Incorrect Type Conversion or Cast
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.10
(python)
Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0a2 (python) |
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CVE-2025-12084 (GCVE-0-2025-12084)
Vulnerability from cvelistv5 – Published: 2025-12-03 18:55 – Updated: 2026-03-03 14:41
VLAI
Title
Quadratic complexity in node ID cache clearing
Summary
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
14 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
Affected: 3.11.0 , < 3.11.15 (python) Affected: 3.12.0 , < 3.12.13 (python) Affected: 3.13.0 , < 3.13.11 (python) Affected: 3.14.0 , < 3.14.2 (python) Affected: 3.15.0a1 , < 3.15.0a3 (python) |
Credits
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CVE-2025-13837 (GCVE-0-2025-13837)
Vulnerability from cvelistv5 – Published: 2025-12-01 18:13 – Updated: 2026-03-03 14:41
VLAI
Title
Out-of-memory when loading Plist
Summary
When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
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CVE-2025-13836 (GCVE-0-2025-13836)
Vulnerability from cvelistv5 – Published: 2025-12-01 18:02 – Updated: 2026-03-03 14:41
VLAI
Title
Excessive read buffering DoS in http.client
Summary
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
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CVE-2025-6075 (GCVE-0-2025-6075)
Vulnerability from cvelistv5 – Published: 2025-10-31 16:41 – Updated: 2026-03-03 14:43
VLAI
Title
Quadratic complexity in os.path.expandvars() with user-controlled template
Summary
If the value passed to os.path.expandvars() is user-controlled a
performance degradation is possible when expanding environment
variables.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.20
(python)
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CVE-2024-9287 (GCVE-0-2024-9287)
Vulnerability from cvelistv5 – Published: 2024-10-22 16:34 – Updated: 2025-11-03 22:33
VLAI
Title
Virtual environment (venv) activation scripts don't quote paths
Summary
A vulnerability has been found in the CPython `venv` module and CLI where path names provided when creating a virtual environment were not quoted properly, allowing the creator to inject commands into virtual environment "activation" scripts (ie "source venv/bin/activate"). This means that attacker-controlled virtual environments are able to run commands when the virtual environment is activated. Virtual environments which are not created by an attacker or which aren't activated before being used (ie "./venv/bin/python") are not affected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-428 - Unquoted Search Path or Element
Assigner
References
12 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.21
(python)
Affected: 3.10.0 , < 3.10.16 (python) Affected: 3.11.0 , < 3.11.11 (python) Affected: 3.12.0 , < 3.12.8 (python) Affected: 3.13.0 , < 3.13.1 (python) Affected: 3.14.0a1 , < 3.14.0a2 (python) |
|
| python | cpython |
Affected:
0 , ≤ 3.13.0
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CVE-2024-6232 (GCVE-0-2024-6232)
Vulnerability from cvelistv5 – Published: 2024-09-03 12:29 – Updated: 2025-11-03 22:32
VLAI
Title
Regular-expression DoS when parsing TarFile headers
Summary
There is a MEDIUM severity vulnerability affecting CPython.
Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
13 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.8.20
(python)
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|
| python | cpython |
Affected:
0 , < 3.8.20
(custom)
Affected: 3.9.0 , < 3.9.20 (custom) Affected: 3.10.0 , < 3.10.15 (custom) Affected: 3.11.0 , < 3.11.10 (custom) Affected: 3.12.0 , < 3.12.6 (custom) Affected: 3.13.0a1 , < 3.13.0rc2 (custom) cpe:2.3:a:python:cpython:*:*:*:*:*:*:*:* |
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"url": "https://github.com/python/cpython/commit/7d1f50cd92ff7e10a1c15a8f591dde8a6843a64d"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/b4225ca91547aa97ed3aca391614afbb255bc877"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/34ddb64d088dd7ccc321f6103d23153256caa5d4"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Regular-expression DoS when parsing TarFile headers",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
"assignerShortName": "PSF",
"cveId": "CVE-2024-6232",
"datePublished": "2024-09-03T12:29:00.102Z",
"dateReserved": "2024-06-20T21:01:55.524Z",
"dateUpdated": "2025-11-03T22:32:42.630Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CERTFR-2026-AVI-0505
Vulnerability from certfr_avis - Published: 2026-04-28 - Updated: 2026-04-28
Une vulnérabilité a été découverte dans Python. Elle permet à un attaquant de provoquer un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Python sans le dernier correctif de s\u00e9curit\u00e9",
"product": {
"name": "Python",
"vendor": {
"name": "Python",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-3087",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3087"
}
],
"initial_release_date": "2026-04-28T00:00:00",
"last_revision_date": "2026-04-28T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0505",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-28T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Python. Elle permet \u00e0 un attaquant de provoquer un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Vuln\u00e9rabilit\u00e9 dans Python",
"vendor_advisories": [
{
"published_at": "2026-04-27",
"title": "Bulletin de s\u00e9curit\u00e9 Python X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4",
"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4/"
}
]
}
CERTFR-2026-AVI-0474
Vulnerability from certfr_avis - Published: 2026-04-22 - Updated: 2026-04-22
Une vulnérabilité a été découverte dans Python. Elle permet à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Python sans le dernier correctif de s\u00e9curit\u00e9",
"product": {
"name": "Python",
"vendor": {
"name": "Python",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-3298",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3298"
}
],
"initial_release_date": "2026-04-22T00:00:00",
"last_revision_date": "2026-04-22T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0474",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-22T00:00:00.000000"
}
],
"risks": [
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Python. Elle permet \u00e0 un attaquant de provoquer un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
"title": "Vuln\u00e9rabilit\u00e9 dans Python",
"vendor_advisories": [
{
"published_at": "2026-04-21",
"title": "Bulletin de s\u00e9curit\u00e9 Python KWTPIQBOOOUNQP7UFSLBI437NJDFLA3F",
"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/KWTPIQBOOOUNQP7UFSLBI437NJDFLA3F/"
}
]
}
CERTFR-2025-AVI-1068
Vulnerability from certfr_avis - Published: 2025-12-05 - Updated: 2025-12-05
Une vulnérabilité a été découverte dans Python. Elle permet à un attaquant de provoquer un déni de service à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Python sans les derniers correctifs de s\u00e9curit\u00e9",
"product": {
"name": "Python",
"vendor": {
"name": "Python",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2025-12084",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-12084"
}
],
"initial_release_date": "2025-12-05T00:00:00",
"last_revision_date": "2025-12-05T00:00:00",
"links": [],
"reference": "CERTFR-2025-AVI-1068",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2025-12-05T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Python. Elle permet \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance.",
"title": "Vuln\u00e9rabilit\u00e9 dans Python",
"vendor_advisories": [
{
"published_at": "2025-12-03",
"title": "Bulletin de s\u00e9curit\u00e9 Python PSF-2025-16",
"url": "https://raw.githubusercontent.com/psf/advisory-database/main/advisories/python/PSF-2025-16.json"
}
]
}