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CVE-2026-32314

Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. Prior to 0.13.10, the Rust implementation of Yamux can panic when processing a crafted inbound Data frame that sets SYN and uses a body length greater than DEFAULT_CREDIT (e.g. 262145). On the first packet of a new inbound stream, stream state is created and a receiver is queued before oversized-body validation completes. When validation fails, the temporary stream is dropped and cleanup may call remove(...).expect(
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:718cfbd09a3e0a367c7997c0fc38aa3f05abc353fe09a4128508e8dc08a6583b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"rust-yamux","vendor":"libp2p","versions":[{"status":"affected","version":"< 0.13.10"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d65fe7a7912e2fcfde5463679c059280d119f980d2874e731dd2b7dc707a6bcb · sha256:0655d9b6d168bf9e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d65fe7a7912e2fcfde5463679c059280d119f980d2874e731dd2b7dc707a6bcb · sha256:0655d9b6d168bf9e… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d65fe7a7912e2fcfde5463679c059280d119f980d2874e731dd2b7dc707a6bcb · sha256:0655d9b6d168bf9e… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/libp2p/rust-yamux/security/advisories/GHSA-vxx9-2994-q338","tags":["x_refsource_CONFIRM"],"url":"https://github.com/libp2p/rust-yamux/security/advisories/GHSA-vxx9-2994-q338"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d65fe7a7912e2fcfde5463679c059280d119f980d2874e731dd2b7dc707a6bcb · sha256:0655d9b6d168bf9e… · /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.

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