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    10 vulnerabilities by facelessuser

    CVE-2026-46338 (GCVE-0-2026-46338)

    Vulnerability from nvd – Published: 2026-07-16 18:24 – Updated: 2026-07-17 17:52
    VLAI
    Title
    PyMdown Extensions: Regression in pymdownx.snippets reintroduces sibling-prefix path traversal bypass despite restrict_base_path
    Summary
    PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. From 10.0.1 until 10.21.3, pymdownx.snippets uses a string-prefix containment check in SnippetPreprocessor.get_snippet_path() in pymdownx/snippets.py when `restrict_base_path: True`, allowing markdown snippet directives to read files from sibling paths that share the same base_path prefix, such as docs and docs_internal. This is a regression of CVE-2023-32309. This issue is fixed in version 10.21.3.
    Severity
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser pymdown-extensions Affected: >= 10.0.1, < 10.21.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    ],
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    CVE-2026-49477 (GCVE-0-2026-49477)

    Vulnerability from nvd – Published: 2026-07-14 20:51 – Updated: 2026-07-14 20:51
    VLAI
    Title
    Soup Sieve: Regular Expression Denial of Service (ReDoS) in soupsieve Selector Parser
    Summary
    Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in soupsieve/css_parser.py, allowing an attacker who can supply untrusted CSS selector strings to soupsieve.compile() or Beautiful Soup .select() / .select_one() to cause CPU exhaustion and denial of service. This issue is fixed in version 2.8.4.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser soupsieve Affected: < 2.8.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-49476 (GCVE-0-2026-49476)

    Vulnerability from nvd – Published: 2026-07-14 20:53 – Updated: 2026-07-15 14:27
    VLAI
    Title
    Soup Sieve: Memory Exhaustion via Large Comma-Separated Selector Lists in soupsieve
    Summary
    Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve allocates unbounded memory when compiling large comma-separated selector lists, allowing an attacker who can supply a crafted selector string to soupsieve.compile() or Beautiful Soup .select() / .select_one() to allocate hundreds of megabytes of heap memory from a relatively small input and cause denial of service. This issue is fixed in version 2.8.4.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser soupsieve Affected: < 2.8.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-68142 (GCVE-0-2025-68142)

    Vulnerability from nvd – Published: 2025-12-16 18:06 – Updated: 2025-12-17 18:51
    VLAI
    Title
    PyMdown Extensions has ReDOS bug in Figure Capture extension
    Summary
    PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. Versions prior to 10.16.1 have a ReDOS bug found within the figure caption extension (`pymdownx.blocks.caption`). In systems that take unchecked user content, this could cause long hanges when processing the data if a malicious payload was crafted. This issue is patched in Release 10.16.1. As a workaround, those who process unknown user content without timeouts or other safeguards in place to prevent really large, malicious content being aimed at systems may avoid the use of `pymdownx.blocks.caption` until they're able to upgrade.
    Severity
    2.7 (Low)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2023-32309 (GCVE-0-2023-32309)

    Vulnerability from nvd – Published: 2023-05-15 20:42 – Updated: 2025-01-22 21:41
    VLAI
    Title
    Arbitrary file inclusion with the pymdowm-snippets extension
    Summary
    PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. In affected versions an arbitrary file read is possible when using include file syntax. By using the syntax `--8<--"/etc/passwd"` or `--8<--"/proc/self/environ"` the content of these files will be rendered in the generated documentation. Additionally, a path relative to a specified, allowed base path can also be used to render the content of a file outside the specified base paths: `--8<-- "../../../../etc/passwd"`. Within the Snippets extension, there exists a `base_path` option but the implementation is vulnerable to Directory Traversal. The vulnerable section exists in `get_snippet_path(self, path)` lines 155 to 174 in snippets.py. Any readable file on the host where the plugin is executing may have its content exposed. This can impact any use of Snippets that exposes the use of Snippets to external users. It is never recommended to use Snippets to process user-facing, dynamic content. It is designed to process known content on the backend under the control of the host, but if someone were to accidentally enable it for user-facing content, undesired information could be exposed. This issue has been addressed in version 10.0. Users are advised to upgrade. Users unable to upgrade may restrict relative paths by filtering input.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser pymdown-extensions Affected: >= 1.5, < 10.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-46338 (GCVE-0-2026-46338)

    Vulnerability from cvelistv5 – Published: 2026-07-16 18:24 – Updated: 2026-07-17 17:52
    VLAI
    Title
    PyMdown Extensions: Regression in pymdownx.snippets reintroduces sibling-prefix path traversal bypass despite restrict_base_path
    Summary
    PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. From 10.0.1 until 10.21.3, pymdownx.snippets uses a string-prefix containment check in SnippetPreprocessor.get_snippet_path() in pymdownx/snippets.py when `restrict_base_path: True`, allowing markdown snippet directives to read files from sibling paths that share the same base_path prefix, such as docs and docs_internal. This is a regression of CVE-2023-32309. This issue is fixed in version 10.21.3.
    Severity
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser pymdown-extensions Affected: >= 10.0.1, < 10.21.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-49476 (GCVE-0-2026-49476)

    Vulnerability from cvelistv5 – Published: 2026-07-14 20:53 – Updated: 2026-07-15 14:27
    VLAI
    Title
    Soup Sieve: Memory Exhaustion via Large Comma-Separated Selector Lists in soupsieve
    Summary
    Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve allocates unbounded memory when compiling large comma-separated selector lists, allowing an attacker who can supply a crafted selector string to soupsieve.compile() or Beautiful Soup .select() / .select_one() to allocate hundreds of megabytes of heap memory from a relatively small input and cause denial of service. This issue is fixed in version 2.8.4.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser soupsieve Affected: < 2.8.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-49477 (GCVE-0-2026-49477)

    Vulnerability from cvelistv5 – Published: 2026-07-14 20:51 – Updated: 2026-07-14 20:51
    VLAI
    Title
    Soup Sieve: Regular Expression Denial of Service (ReDoS) in soupsieve Selector Parser
    Summary
    Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in soupsieve/css_parser.py, allowing an attacker who can supply untrusted CSS selector strings to soupsieve.compile() or Beautiful Soup .select() / .select_one() to cause CPU exhaustion and denial of service. This issue is fixed in version 2.8.4.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser soupsieve Affected: < 2.8.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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          "name": "https://github.com/facelessuser/soupsieve/commit/eb4397618709186c109400448c6043b728217dc3",
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    CVE-2025-68142 (GCVE-0-2025-68142)

    Vulnerability from cvelistv5 – Published: 2025-12-16 18:06 – Updated: 2025-12-17 18:51
    VLAI
    Title
    PyMdown Extensions has ReDOS bug in Figure Capture extension
    Summary
    PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. Versions prior to 10.16.1 have a ReDOS bug found within the figure caption extension (`pymdownx.blocks.caption`). In systems that take unchecked user content, this could cause long hanges when processing the data if a malicious payload was crafted. This issue is patched in Release 10.16.1. As a workaround, those who process unknown user content without timeouts or other safeguards in place to prevent really large, malicious content being aimed at systems may avoid the use of `pymdownx.blocks.caption` until they're able to upgrade.
    Severity
    2.7 (Low)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2023-32309 (GCVE-0-2023-32309)

    Vulnerability from cvelistv5 – Published: 2023-05-15 20:42 – Updated: 2025-01-22 21:41
    VLAI
    Title
    Arbitrary file inclusion with the pymdowm-snippets extension
    Summary
    PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. In affected versions an arbitrary file read is possible when using include file syntax. By using the syntax `--8<--"/etc/passwd"` or `--8<--"/proc/self/environ"` the content of these files will be rendered in the generated documentation. Additionally, a path relative to a specified, allowed base path can also be used to render the content of a file outside the specified base paths: `--8<-- "../../../../etc/passwd"`. Within the Snippets extension, there exists a `base_path` option but the implementation is vulnerable to Directory Traversal. The vulnerable section exists in `get_snippet_path(self, path)` lines 155 to 174 in snippets.py. Any readable file on the host where the plugin is executing may have its content exposed. This can impact any use of Snippets that exposes the use of Snippets to external users. It is never recommended to use Snippets to process user-facing, dynamic content. It is designed to process known content on the backend under the control of the host, but if someone were to accidentally enable it for user-facing content, undesired information could be exposed. This issue has been addressed in version 10.0. Users are advised to upgrade. Users unable to upgrade may restrict relative paths by filtering input.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    facelessuser pymdown-extensions Affected: >= 1.5, < 10.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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