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CVE-2026-31253

The flash-attention training framework thru commit e724e2588cbe754beb97cf7c011b5e7e34119e62 (2025-13-04) contains an insecure deserialization vulnerability (CWE-502) in its checkpoint loading mechanism. The load_checkpoint() function in checkpoint.py and the checkpoint loading code in eval.py use torch.load() without enabling the security-restrictive weights_only=True parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by pro
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:69f2641585ef87b1626424a823a2d2552926b8cca3f68ed2d9d3c7aa27f77ae3
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

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/adp/0/problemTypes/0/descriptions/0

{"cweId":"CWE-94","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/adp/0/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/adp/0/problemTypes/0/descriptions/0
{"cweId":"CWE-94","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/adp/0/problemTypes/1/descriptions/0

Source references

2 source assertions
{"url":"https://github.com/Dao-AILab/flash-attention"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/cna/references/0
{"url":"https://www.notion.so/CVE-2026-31253-35d1e1393188813f9e77e2038104bc49"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:61dc0f8ef306243bf31a6c0a52b5ed7351024ab96661fd5c2d8ce30b86cb6b10 · sha256:110401c68ac27b0f… · /containers/cna/references/1

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.

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