{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54345","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-12T19:23:22.317Z","datePublished":"2026-07-28T16:14:12.097Z","dateUpdated":"2026-07-28T17:11:47.628Z"},"containers":{"cna":{"title":"GoPacket's Diameter AVP decoder: uint32 underflow on vendor header size leads to unbounded ~4 GiB allocation (unauthenticated remote DoS)","problemTypes":[{"descriptions":[{"cweId":"CWE-191","lang":"en","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5"},{"name":"https://github.com/gopacket/gopacket/commit/145859d0eaee1a6f5925ffb93851c976449c3311","tags":["x_refsource_MISC"],"url":"https://github.com/gopacket/gopacket/commit/145859d0eaee1a6f5925ffb93851c976449c3311"},{"name":"https://github.com/gopacket/gopacket/releases/tag/v1.6.1","tags":["x_refsource_MISC"],"url":"https://github.com/gopacket/gopacket/releases/tag/v1.6.1"}],"affected":[{"vendor":"gopacket","product":"gopacket","versions":[{"version":"< 1.6.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-28T16:16:01.548Z"},"descriptions":[{"lang":"en","value":"gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing an unauthenticated remote denial of service. This issue is fixed in version 1.6.1."}],"source":{"advisory":"GHSA-6r28-9ppf-4hj5","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-28T17:11:29.185159Z","id":"CVE-2026-54345","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-28T17:11:47.628Z"}}]}}