Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2025-68146

filelock is a platform-independent file lock for Python. In versions prior to 3.20.1, a Time-of-Check-Time-of-Use (TOCTOU) race condition allows local attackers to corrupt or truncate arbitrary user files through symlink attacks. The vulnerability exists in both Unix and Windows lock file creation where filelock checks if a file exists before opening it with O_TRUNC. An attacker can create a symlink pointing to a victim file in the time gap between the check and open, causing os.open() to follow
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b13cf2b53fd2cd3911ce22110ab6fd8e27307d3cd2363c465e5553407c006cfb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"filelock","vendor":"tox-dev","versions":[{"status":"affected","version":"< 3.20.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/tox-dev/filelock/commit/4724d7f8c3393ec1f048c93933e6e3e6ec321f0e","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/commit/4724d7f8c3393ec1f048c93933e6e3e6ec321f0e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/references/2
{"name":"https://github.com/tox-dev/filelock/pull/461","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/pull/461"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/references/1
{"name":"https://github.com/tox-dev/filelock/releases/tag/3.20.1","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/releases/tag/3.20.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/references/3
{"name":"https://github.com/tox-dev/filelock/security/advisories/GHSA-w853-jp5j-5j7f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-w853-jp5j-5j7f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a8399c822818b68ca644a0d4bc3373ac4b4af74850da8d9d671c175f0953e5e · sha256:af7f27cf803aaac5… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer