RHSA-2026:67572
Vulnerability from csaf_redhat - Published: 2026-09-15 14:08 - Updated: 2026-09-21 11:43Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
python3.14:
* python-unversioned-command-3.14.7-1.2.hum1 (noarch)
* python3-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3-debug-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3-devel-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3-idle-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3-libs-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3-test-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3-tkinter-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-debug-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-devel-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-idle-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-libs-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-test-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-freethreading-tkinter-3.14.7-1.2.hum1 (aarch64, x86_64)
* python3.14-3.14.7-1.2.hum1.src (src)
Security Fix(es):
python3.14:
* CVE-2026-87910
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in the `unicodedata.normalize()` function in Python. This vulnerability allows a remote attacker to cause excessive CPU consumption by providing specially crafted Unicode input. Successful exploitation can lead to a Denial of Service (DoS) on the affected system.
5.3 (Medium)
Affected products
Fixed
31 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:python-unversioned-command-0:3.14.7-1.2.hum1@noarch@public-hummingbird-aarch64-rpms | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python-unversioned-command-0:3.14.7-1.2.hum1@noarch@public-hummingbird-x86_64-rpms | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-debug-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-debug-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-devel-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-devel-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-idle-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-idle-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-libs-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-libs-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-test-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-test-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-tkinter-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3-tkinter-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-0:3.14.7-1.2.hum1@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-debug-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-debug-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-devel-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-devel-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-idle-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-idle-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-libs-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-libs-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-test-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-test-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-tkinter-0:3.14.7-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:python3.14-freethreading-tkinter-0:3.14.7-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the `python` and `expat` components. Insufficient entropy in the hash-flooding protection mechanism of `xml.parsers.expat` and `xml.etree.ElementTree` allows a remote attacker to craft a malicious XML document. This crafted document can trigger a hash flooding attack, leading to a denial of service (DoS) condition.
5.3 (Medium)
Affected products
Fixed
31 products, the same list as for
CVE-2026-3276
Threats
Impact
Moderate
A flaw was found in the `ftplib.py` module of Python. This vulnerability allows a remote attacker to bypass a previous security fix by manipulating the `ftpcp()` function. By supplying a malicious IP address and port, an attacker can redirect FTP connections to an arbitrary host. This could lead to the compromise of data integrity or other network-based attacks.
5.3 (Medium)
Affected products
Fixed
31 products, the same list as for
CVE-2026-3276
Threats
Impact
Important
A flaw was found in Python's `bz2.BZ2Decompressor` component. An attacker could provide specially crafted input that, when processed by an application reusing a decompressor object after an error, could lead to out-of-bounds writes in memory. This memory corruption could cause the application to crash, resulting in a Denial of Service (DoS).
5.9 (Medium)
Affected products
Fixed
31 products, the same list as for
CVE-2026-3276
Threats
Impact
Moderate
A flaw was found in Python. On Windows systems utilizing legacy installers, a low-privilege user can exploit insecure handling of the `VPATH` variable. This allows the user to create a specific landmark file outside the Python installation directory. Consequently, an alternative `Lib` folder can be introduced, leading to privilege escalation.
7.8 (High)
Affected products
Fixed
31 products, the same list as for
CVE-2026-3276
Threats
Impact
Important
A flaw was found in the Python `tarfile` module. When extracting an archive containing a link on systems that do not support links, the module falls back to extracting the linked member. During this fallback, a security filter designed to prevent the extraction of certain files is not properly applied. This oversight could allow an attacker to bypass intended security restrictions, potentially leading to the creation or modification of arbitrary files on the system.
5.7 (Medium)
Affected products
Fixed
31 products, the same list as for
CVE-2026-3276
Threats
Impact
Moderate
References
51 references
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"name": "Out-of-bounds Write"
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{
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"text": "A flaw was found in Python\u0027s `bz2.BZ2Decompressor` component. An attacker could provide specially crafted input that, when processed by an application reusing a decompressor object after an error, could lead to out-of-bounds writes in memory. This memory corruption could cause the application to crash, resulting in a Denial of Service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "python: Python: Denial of Service via out-of-bounds write in BZ2 decompression",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Moderate-impact flaw in Python\u0027s `bz2.BZ2Decompressor` component affects Red Hat Enterprise Linux 8. It allows an attacker to trigger a denial of service by providing specially crafted compressed data. Exploitation requires an application to reuse a `BZ2Decompressor` object after a decompression error, leading to out-of-bounds writes and a crash.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"Red Hat Hardened Images:python3.14-freethreading-tkinter-0:3.14.7-1.2.hum1@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:67572"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"products": [
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"Red Hat Hardened Images:python-unversioned-command-0:3.14.7-1.2.hum1@noarch@public-hummingbird-x86_64-rpms",
"Red Hat Hardened Images:python3-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3-debug-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3-debug-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3-devel-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3-devel-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3-idle-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3-idle-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3-libs-0:3.14.7-1.2.hum1@aarch64",
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"Red Hat Hardened Images:python3-test-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3-test-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3-tkinter-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3-tkinter-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-0:3.14.7-1.2.hum1@src",
"Red Hat Hardened Images:python3.14-freethreading-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-freethreading-debug-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-debug-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-freethreading-devel-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-devel-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-freethreading-idle-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-idle-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-freethreading-libs-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-libs-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-freethreading-test-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-test-0:3.14.7-1.2.hum1@x86_64",
"Red Hat Hardened Images:python3.14-freethreading-tkinter-0:3.14.7-1.2.hum1@aarch64",
"Red Hat Hardened Images:python3.14-freethreading-tkinter-0:3.14.7-1.2.hum1@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "python: Python tarfile module: Security filter bypass allows arbitrary file write"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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