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cbor2 C extension decoder flaws can cause denial of service
cbor2 C extension decoder flaws can cause denial of service
Affected packages
- cbor2— before 5.7.1
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2025-64076
- https://github.com/agronholm/cbor2/issues/264
- https://github.com/agronholm/cbor2/pull/265
- https://github.com/agronholm/cbor2/commit/851473490281f82d82560b2368284ef33cf6e8f9
- https://github.com/agronholm/cbor2
- https://github.com/agronholm/cbor2/releases/tag/5.7.1
- https://github.com/pypa/advisory-database/tree/main/vulns/cbor2/PYSEC-2025-238.yaml
Structured record: https://osv.dev/vulnerability/GHSA-9q9c-vjxh-p795
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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