High
Fedify has ReDoS Vulnerability in HTML Parsing Regex
Type: advisorySources: OSV
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 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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-68475
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 05:45 UTC · Revision 1
Source evidence
Fedify has ReDoS Vulnerability in HTML Parsing Regex
core-osv · Original sourcePublished 22 Dec 2025, 21:31 UTC
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 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.
osv:CVE-2025-68475
Complete source record
{
"id": "48d9a7f77d33d750f7e7f5d894c5969de601d54eafb30d04193db36d6f145e21",
"url": "https://osv.dev/vulnerability/CVE-2025-68475",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fedify has ReDoS Vulnerability in HTML Parsing Regex",
"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 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.",
"evidence": "osv:CVE-2025-68475",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2025-68475",
"aliases": [
"CVE-2025-68475",
"GHSA-rchf-xwx2-hm93"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/fedify-dev/fedify",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "6658a9cab3731449c0d71289d88d189c5161be9c"
},
{
"introduced": "15cd79ad03562832c4e86802d6f617df679bc27e"
},
{
"fixed": "c6d7e743c995c9fa84d74f94952eb0dfc6cb7bab"
},
{
"introduced": "24abaf2e4353b50200a930f0ca05da7ee7cd4502"
},
{
"fixed": "7955e17abfd5b208d6bd1666e41f942cb9103a8b"
},
{
"introduced": "d4ce275d7fc25eef539b0e9d5bd7a527ec949edb"
},
{
"fixed": "3114e4add0df8494a6cc6803593fb02e69135bc5"
},
{
"fixed": "2bdcb24d7d6d5886e0214ed504b63a6dc5488779"
},
{
"fixed": "bf2f0783634efed2663d1b187dc55461ee1f987a"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:fedify:fedify:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.6.13"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:fedify:fedify:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.7.0"
},
{
"fixed": "1.7.14"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:fedify:fedify:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.8.1"
},
{
"fixed": "1.8.15"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:fedify:fedify:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.9.0"
},
{
"fixed": "1.9.2"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "2bdcb24d7d6d5886e0214ed504b63a6dc5488779"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "bf2f0783634efed2663d1b187dc55461ee1f987a"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "6658a9cab3731449c0d71289d88d189c5161be9c"
}
],
"source": "REFERENCES_TAG",
"original_tag": "1.6.13"
},
{
"range": [
{
"fixed": "c6d7e743c995c9fa84d74f94952eb0dfc6cb7bab"
}
],
"source": "REFERENCES_TAG",
"original_tag": "1.7.14"
},
{
"range": [
{
"fixed": "7955e17abfd5b208d6bd1666e41f942cb9103a8b"
}
],
"source": "REFERENCES_TAG",
"original_tag": "1.8.15"
},
{
"range": [
{
"fixed": "3114e4add0df8494a6cc6803593fb02e69135bc5"
}
],
"source": "REFERENCES_TAG",
"original_tag": "1.9.2"
}
]
}
}
],
"versions": [
"1.9.1",
"1.8.14",
"1.9.0",
"1.8.13",
"1.8.12",
"1.8.11",
"1.7.13",
"1.6.12",
"1.8.10",
"1.7.12",
"1.6.11",
"1.8.9",
"1.8.8",
"1.7.11",
"1.6.10",
"1.8.7",
"1.7.10",
"1.6.9",
"1.8.6",
"1.8.5",
"1.7.9",
"1.6.8",
"1.8.4",
"1.8.3",
"1.8.2",
"1.8.1",
"1.7.8",
"1.7.7",
"1.7.6",
"1.6.7",
"1.7.5",
"1.6.6",
"1.7.4",
"1.7.3",
"1.6.5",
"1.7.2",
"1.6.4",
"1.7.1",
"1.6.3",
"1.7.0",
"1.6.2",
"1.6.1",
"1.5.0",
"1.4.0",
"1.3.0",
"1.2.0",
"1.1.0",
"1.0.0",
"0.15.0",
"0.14.0",
"0.13.0",
"0.12.0",
"0.11.0",
"0.10.0",
"0.9.0",
"0.8.0",
"0.7.0",
"0.6.0",
"0.5.0",
"0.4.0",
"0.3.0",
"0.2.0",
"0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68475.json"
}
}
],
"modified": "2026-10-28T02:30:26.460843526Z",
"provider": "osv",
"references": [
"https://github.com/fedify-dev/fedify/releases/tag/1.6.13",
"https://github.com/fedify-dev/fedify/releases/tag/1.7.14",
"https://github.com/fedify-dev/fedify/releases/tag/1.8.15",
"https://github.com/fedify-dev/fedify/releases/tag/1.9.2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68475.json",
"https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93",
"https://nvd.nist.gov/vuln/detail/CVE-2025-68475",
"https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779",
"https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a"
],
"provider_metadata": {
"cwe_ids": [
"CWE-1333"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68475.json"
}
},
"related_cves": [
{
"value": "CVE-2025-68475",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492823,
"published_at": "2025-12-22T21:31:20.314+00:00"
}