{"id":"CVE-2026-59874","state":"PUBLISHED","title":"node-tar: Negative tar entry size causes infinite loop in archive replace","description":"node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18.","publishedAt":"2026-07-08T15:23:47.527Z","updatedAt":"2026-07-08T17:00:42.937Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["isaacs node-tar"],"affected":[{"vendor":"isaacs","product":"node-tar","versions":[{"version":"< 7.5.18","status":"affected"}]}],"references":["https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w","https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5","https://github.com/isaacs/node-tar/releases/tag/v7.5.18"],"weaknesses":["CWE-835"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59874.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59874","state":"PUBLISHED","datePublished":"2026-07-08T15:23:47.527Z","dateUpdated":"2026-07-08T17:00:42.937Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-07T15:41:53.607Z"},"containers":{"cna":{"title":"node-tar: Negative tar entry size causes infinite loop in archive replace","descriptions":[{"lang":"en","value":"node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18."}],"affected":[{"vendor":"isaacs","product":"node-tar","versions":[{"version":"< 7.5.18","status":"affected"}]}],"references":[{"url":"https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w","name":"https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5","name":"https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5","tags":["x_refsource_MISC"]},{"url":"https://github.com/isaacs/node-tar/releases/tag/v7.5.18","name":"https://github.com/isaacs/node-tar/releases/tag/v7.5.18","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-835","lang":"en","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-08T15:23:47.527Z"},"source":{"advisory":"GHSA-8x88-c5mf-7j5w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T16:51:08.126808Z","id":"CVE-2026-59874","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-08T17:00:42.937Z"}}]}}}