CVE-2025-68475

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

December 22, 2025

Last Modified

March 17, 2026

Advisory Details (7)

Auto-updated Aug 8, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

ReDoS Vulnerability in HTML Parsing Regex · Advisory · fedify-dev/fedify · GitHub

https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93
github_release Patch Available

Fedify 1.9.2

Patch available: fedify-dev/fedify 1.9.2

https://github.com/fedify-dev/fedify/releases/tag/1.9.2
github_release Patch Available

Fedify 1.8.15

Patch available: fedify-dev/fedify 1.8.15

https://github.com/fedify-dev/fedify/releases/tag/1.8.15
github_release Patch Available

Fedify 1.7.14

Patch available: fedify-dev/fedify 1.7.14

https://github.com/fedify-dev/fedify/releases/tag/1.7.14
github_release Patch Available

Fedify 1.6.13

Patch available: fedify-dev/fedify 1.6.13

https://github.com/fedify-dev/fedify/releases/tag/1.6.13
github_commit

commit bf2f0783634e (fedify-dev/fedify)

Fix landed in fedify-dev/fedify commit bf2f0783634e — awaiting tagged release

https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a
github_commit

commit 2bdcb24d7d6d (fedify-dev/fedify)

Fix landed in fedify-dev/fedify commit 2bdcb24d7d6d — awaiting tagged release

https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@fedify/fedify—1.9.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 148 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
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  1. 2026-08-21 23:48 UTCEPSS rescore
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  34. 2026-07-23 11:49 UTCOSV refresh
  35. 2026-07-23 03:02 UTCEG score recompute
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  75. 2026-06-25 13:49 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-68475?
CVE-2025-68475 is a high vulnerability published on December 22, 2025. 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…
When was CVE-2025-68475 disclosed?
CVE-2025-68475 was first published in the National Vulnerability Database on December 22, 2025, with the most recent update on March 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-68475 actively exploited?
CVE-2025-68475 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.6% of all scored CVEs.
What is the CVSS score of CVE-2025-68475?
CVE-2025-68475 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-68475?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-68475, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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