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CVE-2026-3446VulnerabilityPublished

SUSE · Security update for python311

Affects SUSESource GCVE Database

0
Authoritative record:CVE-2026-3446· Medium 6.0

Not known to be exploited · CVSS 6.0 Medium · fixed in SUSE package updates : update SUSE cpython when convenient.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 4.0 base score
6.0Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.15.0a8, 3.14.4, 3.13.13
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade CPython to 3.15.0a8, 3.14.4 or 3.13.13.

Affected software

ProductAffectedFixed in
Python Software FoundationCPythonAffected
  • >=3.15.0a1 <3.15.0a8
Fixed in
  • 3.15.0a8
Python Software FoundationCPythonAffected
  • >=3.14.0 <3.14.4
Fixed in
  • 3.14.4
Python Software FoundationCPythonAffected
  • <3.13.13
Fixed in
  • 3.13.13
PyPIcpythonpkg:pypi/cpythonOther threatsAffected
  • =0
  • =3.14.0
  • =3.15.0
Fixed in–
GitHubCPythonpkg:github/CPythonOther threatsAffected
  • <3.13.13
  • >=3.14.0 <3.14.4
  • >=3.15.0a1 <3.15.0a8
Fixed in
  • 3.13.13
  • 3.14.4
  • 3.15.0a8

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

Description

This update for python311 fixes the following issues: - CVE-2026-3446: Base64 decoding stops at first padded quad by default (bsc#1261970).

References

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