CVE-2025-1795

Advisory lineage Upstream: 0 Downstream: 15
Deferred
Published: 28 Feb 2025, 18:59
Last modified:21 Apr 2026, 20:15

Vulnerability Summary

Overall Risk (default)
minimal
9/100
CVSS Score
2.3 LOW
v4.0 (cve.org)
EPSS Score
0.75% LOW
1% probability +0.16%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Feb 2025, 18:59
Published
Vulnerability first disclosed
21 Apr 2026, 20:15
Last Modified
Vulnerability information updated

Description

During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.

CVSS Metrics

  • v4.0•LOW•Score: 2.3CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  • v4.0•LOW•Score: 2.3CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/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: 0.75%• Percentile: 74%

Techniques & Countermeasures

  • CWE-116•Improper Encoding or Escaping of Output

    The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

Affected Systems

  • python software foundation•cpython

    < 3.9.23 | ≥ 3.10.0, < 3.10.17 | < 3.10.17 | ≥ 3.11.0, < 3.11.9 | ≥ 3.12.0, < 3.12.3 | ≥ 3.13.0a1, < 3.13.0a5

References (10)