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CVE-2026-31250

CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its average_model.py model averaging tool. The script loads PyTorch checkpoint files (epoch_*.pt) for model averaging using torch.load() without enabling the weights_only=True security parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing malicious checkpoint files within a dir
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e6d62eabc349b79ebdb5b474273094abf043f7a1b1cd9f573192a9a0da966f1e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /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:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /containers/adp/0/problemTypes/0/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:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /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:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /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:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"https://github.com/FunAudioLLM/CosyVoice"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /containers/cna/references/0
{"url":"https://www.notion.so/CVE-2026-31250-35d1e13931888147a9a3e1c5e239a0a7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cfc8d47d5a437b4fd7c80981e3a476ec909812ae6e8f1cd55efce01583629bf9 · sha256:13737dc58f7cd6de… · /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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