Red Hat Security Advisory: python3 security update
Affects Red Hat python3Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 5.9 Medium · fixed in Red Hat package updates : update Red Hat CPython when convenient.
Data as of 5 Nov 2026, 18:32 UTC
- Patch
- Available – fixed in 3.15.0a6, 3.14.7, 3.13.15
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 20 Jan 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 5 Nov 2026.
What to do
Upgrade CPython to 3.15.0a6, 3.14.7 or 3.13.15.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Python Software FoundationCPython | Affected
| Fixed in
|
| Python Software FoundationCPython | 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 7 Extended Lifecycle Support that fix these vulnerabilities. Users should apply the provided security update as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate these issues. No additional mitigation steps are indicated.
Description
Red Hat has issued a security advisory for python3 in Red Hat Enterprise Linux 7 Extended Lifecycle Support addressing three vulnerabilities: IMAP and POP3 command injection via user-controlled commands, and email header injection due to unquoted newlines. These issues affect the cpython implementation and have been rated with moderate security impact. The advisory provides updated packages to remediate these vulnerabilities.
References
- access.redhat.com/errata/RHSA-2026:6464 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2431368 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2431373 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2432437 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6464.json (opens in a new tab)