Skip to main content
VulnerabilityPublished Updated

CVE-2025-0938: Libpython · URL parser allowed square brackets in domain names

Affects libpythonSource GCVE Database

0
Compare

Not known to be exploited · fixed in 3.13.2 : update libpython when convenient.

Data as of 4 Nov 2026, 17:16 UTC

Severity
Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

Patch
Available – fixed in 3.13.2, 3.12.9, 3.11.12 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Aug 2025

  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 4 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Bitnamilibpythonpkg:bitnami/libpythonOther threatsAffected
  • <3.9.22
  • >=3.10.0 <3.10.17
  • >=3.11.0 <3.11.12
  • >=3.12.0 <3.12.9
  • >=3.13.0 <3.13.2
Fixed in
  • 3.9.22
  • 3.10.17
  • 3.11.12
  • 3.12.9
  • 3.13.2

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

Description

The Python standard library functions `urllib.parse.urlsplit` and `urlparse` accepted domain names that included square brackets which isn't valid according to RFC 3986. Square brackets are only meant to be used as delimiters for specifying IPv6 and IPvFuture hosts in URLs. This could result in differential parsing across the Python URL parser and other specification-compliant URL parsers.

References

Community reviews

Loading reviews…