CVE-2025-0938

Advisory lineage Upstream: 0 Downstream: 40
Deferred
Published: 31 Jan 2025, 17:51
Last modified:21 Apr 2026, 20:14

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.3 MEDIUM
v4.0 (cve.org)
EPSS Score
1.64% LOW
2% probability +0.39%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

31 Jan 2025, 17:51
Published
Vulnerability first disclosed
21 Apr 2026, 20:14
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•MEDIUM•Score: 6.3CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
  • v4.0•MEDIUM•Score: 6.3CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Trends

Current EPSS score: 1.64%• Percentile: 82%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • python software foundation•cpython

    < 3.9.22 | ≥ 3.10.0, < 3.10.17 | < 3.10.17 | ≥ 3.11.0, < 3.11.12 | ≥ 3.12.0, < 3.12.9 | ≥ 3.13.0, < 3.13.2 | ≥ 3.14.0a1, < 3.14.0a5

References (11)