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CVE-2026-103995VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-103995· Low 2.0

Not known to be exploited · CVSS 2.0 Low : upgrade Red Hat CPython to 3.16.0 when convenient.

Data as of 13 Nov 2026, 05:29 UTC

CVSS 4.0 base score
2.0Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (PSF)CVSS 4.02.0
Patch
Available – fixed in 3.16.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade CPython to 3.16.0.

Affected software

ProductAffectedFixed in
Python Software FoundationCPythonAffected
  • <3.16.0
Fixed in
  • 3.16.0
GitHubCPythonpkg:github/CPythonOther threatsAffected
  • <3.16.0
Fixed in
  • 3.16.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fixed version of the affected RPMs is available: python3.15 and related packages have been updated to version 3.15.2-1.1.hum1. Users should apply this update to remediate the vulnerability. Refer to the Red Hat advisory RHSA-2026:92809 and the official Red Hat images repository for instructions on applying the update.

Description

Red Hat has issued a security advisory for Red Hat Hardened Images RPMs including multiple python3.15 packages. The update addresses a vulnerability identified as CVE-2026-103995, categorized under CWE-444. This update provides bug fixes and enhancements to the affected RPMs across several architectures (aarch64, s390x, x86_64). No specific details about the vulnerability's exploitation or impact are provided beyond the medium severity rating. The advisory includes updated package versions 3.15.2-1.1.hum1 for python3.15 and related components.

References

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