Red Hat Security Advisory: python3 security update
Affects Red Hat python3Source GCVE Database
Not known to be exploited · CVSS 7.8 High · fixed in Red Hat package updates : patch Red Hat CPython soon.
Data as of 30 Oct 2026, 00:32 UTC
- Patch
- Available – fixed in 3.15.0b4, 3.14.7, 3.13.15 +3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 23 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Python Software FoundationCPython | Affected
| Fixed in
|
| Python Software FoundationCPython | Affected
| Fixed in
|
| Python Software FoundationCPython | Affected
| Fixed in
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| Python Software FoundationCPython | Affected
| Fixed in
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| Python Software FoundationCPython | Affected
| Fixed in
|
| Python Software FoundationCPython | Affected
| Fixed in
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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released an official security update for python3 in Red Hat Enterprise Linux 8.6 that addresses CVE-2026-11940. Users should apply the provided updates as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate this vulnerability.
Description
A security vulnerability (CVE-2026-11940) in Python's CPython implementation allows a tarfile extraction filter bypass that can escape the intended destination directory. This issue affects Red Hat Enterprise Linux 8.6 versions of python3. Red Hat has issued a security advisory and provided updates to address this flaw.