{"id":"CVE-2025-68475","title":"Fedify is a TypeScript library for building federated server apps powered by ActivityPub","summary":"Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2, a Regular Expression Denial of Service (ReDoS) vulnerability exists in Fedify's document loade…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-1333"],"vendor":"fedify","product":"fedify","affected":["fedify < 1.6.13","fedify >= 1.7.0, < 1.7.14","fedify >= 1.8.1, < 1.8.15","fedify >= 1.9.0, < 1.9.2"],"patched":["fedify 1.9.2"],"published":"2025-12-22","updated":"2026-09-28","sourceUpdated":"2026-09-28T10:10:00.473","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-68475","references":[{"url":"https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779","label":"security-advisories@github.com"},{"url":"https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a","label":"security-advisories@github.com"},{"url":"https://github.com/fedify-dev/fedify/releases/tag/1.6.13","label":"security-advisories@github.com"},{"url":"https://github.com/fedify-dev/fedify/releases/tag/1.7.14","label":"security-advisories@github.com"},{"url":"https://github.com/fedify-dev/fedify/releases/tag/1.8.15","label":"security-advisories@github.com"},{"url":"https://github.com/fedify-dev/fedify/releases/tag/1.9.2","label":"security-advisories@github.com"},{"url":"https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00559,"epssPercentile":0.44358,"ingestedAt":"2026-09-28T11:08:06.667Z","slug":"CVE-2025-68475","body":"## Overview\n\nFedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2, a Regular Expression Denial of Service (ReDoS) vulnerability exists in Fedify's document loader. The HTML parsing regex at packages/fedify/src/runtime/docloader.ts:259 contains nested quantifiers that cause catastrophic backtracking when processing maliciously crafted HTML responses. This issue has been patched in versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2.\n\n## Affected\n\n- `fedify < 1.6.13`\n- `fedify >= 1.7.0, < 1.7.14`\n- `fedify >= 1.8.1, < 1.8.15`\n- `fedify >= 1.9.0, < 1.9.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fedify 1.9.2`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}