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Description

If the value passed to os.path.expandvars() is user-controlled a performance degradation is possible when expanding environment variables.

PUBLISHED Reserved 2025-06-13 | Published 2025-10-31 | Updated 2025-10-31 | Assigner PSF




LOW: 1.8CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Product status

Default status
unaffected

Any version before 3.15.0
affected

References

github.com/python/cpython/issues/136065 issue-tracking

mail.python.org/.../thread/IUP5QJ6D4KK6ULHOMPC7DPNKRYQTQNLA/ vendor-advisory

github.com/...ommit/2e6150adccaaf5bd95d4c19dfd04a36e0b325d8c patch

github.com/...ommit/631ba3407e3348ccd56ce5160c4fb2c5dc5f4d84 patch

github.com/...ommit/892747b4cf0f95ba8beb51c0d0658bfaa381ebca patch

github.com/...ommit/9ab89c026aa9611c4b0b67c288b8303a480fe742 patch

github.com/...ommit/c8a5f3435c342964e0a432cc9fb448b7dbecd1ba patch

github.com/...ommit/f029e8db626ddc6e3a3beea4eff511a71aaceb5c patch

cve.org (CVE-2025-6075)

nvd.nist.gov (CVE-2025-6075)

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