CVE Explorer

CVE-2026-34219

libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to version 0.49.4, the Rust libp2p Gossipsub implementation contains a remotely reachable panic in backoff expiry handling. After a peer sends a crafted PRUNE control message with an attacker-controlled, near-maximum backoff value, the value is accepted and stored as an Instant near the representable upper bound. On a later heartbeat, the implementation performs unchecked Instant + Duration arithmetic

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:96caf56d86405be0a3b90e9de1d3dbfd6533d85c814c8fca42d6959b3090bb65

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-617","description":"CWE-617: Reachable Assertion","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"product":"rust-libp2p","vendor":"libp2p","versions":[{"status":"affected","version":"< 0.49.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/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:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions

{"cweId":"CWE-617","description":"CWE-617: Reachable Assertion","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-xqmp-fxgv-xvq5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-xqmp-fxgv-xvq5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:156a3117777e36b45decf37497d7d3125ffb9a9256de4e30e8e3334163c91d96 · sha256:550f63960aa5d3f4… · /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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