Vulnerability · CVE-2025-15367
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines.
Published Jan 20, 2026 · catalog updated Feb 26, 2026 · Python Software Foundation CPython
Last checked Nov 6, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-15367. EPSS is 0.38%. Act only if a listed version of Python Software Foundation CPython is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-115557 · Critical
- CVE-2026-1299 · Medium
- CVE-2026-0672 · Medium
- CVE-2025-15366 · Medium
- CVE-2025-15282 · Medium
- Severity
- Medium5.9
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.38%
- Remediation
- Version ranges on file
- Affected products
- vendor Python Software Foundation CPython 0 <3.15.0a6
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Python Software Foundation CPython 0 <3.15.0a60 <3.15.0a6
How to fix CVE-2025-15367
Upgrade
CVE-2025-15367 lists a fix boundary at 3.15.0a6. Compare the installed build with that boundary before you change production.
Version check
Seen in 0 <3.15.0a6
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-15367. EPSS is 0.38%. Act only if a listed version of Python Software Foundation CPython is installed.
Which versions are affected?
Compare what you have installed with Python Software Foundation CPython 0 <3.15.0a6 0 <3.15.0a6. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Jan 20, 2026 · EUVD
Detected
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
Feb 26, 2026 · EUVD
Updated
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
Sources
- CVE.orgVulnerability recordCVE-2025-15367
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-15367
30-day exploitation probability 0.38%
first.org - EUVDVulnerability recordEUVD-2025-206303
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 6, 2026
- CVE.orgNov 4, 2026
- EUVDNov 2, 2026