Red Hat Security Advisory: python3 security update
Affects Red Hat python3Source GCVE Database
Mentioned vulnerabilities
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, 00:08 UTC
Thin evidence
One scorer or none| CNA (PSF) | CVSS 4.0 | 2.0 |
|---|
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 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 12 Nov 2026.
What to do
Upgrade CPython to 3.16.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Python Software FoundationCPython | Affected
| Fixed in
|
GitHubCPythonpkg:github/CPythonOther threats | Affected
| Fixed in
|
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 updated python3 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the provided updates as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate these issues. No additional mitigation steps are indicated beyond applying the official patches.
Description
This Red Hat security advisory addresses multiple moderate severity vulnerabilities in the python3 package for Red Hat Enterprise Linux 8. The issues include an arbitrary file write via tarfile extraction filter bypass (CVE-2026-114583), misinterpretation of HTTP responses due to invalid chunk parsing (CVE-2026-103995), and a security bypass via null byte truncation in socket.getaddrinfo() (CVE-2026-116566). Updates are available to remediate these vulnerabilities.
References
- access.redhat.com/errata/RHSA-2026:99691 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2559388 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2563615 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_99691.json (opens in a new tab)