{"action":"Upgrade libp2p-gossipsub to 0.49.3 or later.","affected":[{"fixed":"0.49.3","introduced":"0"}],"component":"libp2p-gossipsub","cve_ids":["CVE-2026-33040"],"ecosystem":"crates.io","epss":0.00602,"exploited":false,"fixed_versions":["0.49.3"],"ghsa_id":"GHSA-gc42-3jg7-rxr2","id":"tcs_01M5KEZW7EM5XNF9AARZBSY1RD","modified_at":"2026-03-20T21:34:48.742824Z","published_at":"2026-03-18T19:54:12Z","references":["https://osv.dev/vulnerability/GHSA-gc42-3jg7-rxr2","https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-gc42-3jg7-rxr2","https://nvd.nist.gov/vuln/detail/CVE-2026-33040","https://github.com/libp2p/rust-libp2p"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-gc42-3jg7-rxr2","url":"https://osv.dev/vulnerability/GHSA-gc42-3jg7-rxr2"},{"source":"nvd","source_id":"CVE-2026-33040","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33040"}],"summary":"Gossipsub PRUNE.backoff Duration Overflow"}