CVE-2025-53548

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 95% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

Clerk helps developers build user management. Applications that use the verifyWebhook() helper to verify incoming Clerk webhooks are susceptible to accepting improperly signed webhook events. The issue was resolved in @clerk/backend 2.4.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 9, 2025

Last Modified

April 15, 2026

References (1)

Affected Packages

(9 across 1 ecosystem)
npm(9)
PackageVulnerable rangeFixed inDependents
@clerk/astro—2.10.2—
@clerk/backend—2.4.0—
@clerk/express—1.7.4—
@clerk/fastify—2.4.4—
@clerk/nextjs—6.23.3—
@clerk/nuxt—1.7.5—
@clerk/react-router—1.6.4—
@clerk/remix—4.8.5—
@clerk/tanstack-react-start—0.18.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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 155 total refreshes for this CVE.

  1. 2026-08-26 14:45 UTCEPSS rescore
  2. 2026-08-25 13:48 UTCEPSS rescore
  3. 2026-08-24 14:16 UTCEPSS rescore
  4. 2026-08-24 09:22 UTCEPSS rescore
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  17. 2026-08-12 09:54 UTCOSV refresh
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  1. 2026-08-04 15:09 UTCEPSS rescore
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  6. 2026-07-30 16:27 UTCEPSS rescore
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  8. 2026-07-28 15:35 UTCEPSS rescore
  9. 2026-07-27 16:57 UTCOSV refresh
  10. 2026-07-25 14:17 UTCEPSS rescore
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  12. 2026-07-23 14:18 UTCEPSS rescore
  13. 2026-07-23 02:58 UTCEG score recompute
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  27. 2026-07-13 22:29 UTCEPSS rescore
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  30. 2026-07-12 05:46 UTCEPSS rescore
  31. 2026-07-11 08:27 UTCEPSS rescore
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  33. 2026-07-10 09:52 UTCOSV refresh
  34. 2026-07-09 19:09 UTCEPSS rescore
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  36. 2026-07-07 13:45 UTCEPSS rescore
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  41. 2026-07-02 17:01 UTCEPSS rescore
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  43. 2026-06-30 23:22 UTCEPSS rescore
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  48. 2026-06-28 04:55 UTCEPSS rescore
  49. 2026-06-27 03:08 UTCEPSS rescore
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  51. 2026-06-25 13:49 UTCEPSS rescore
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  54. 2026-06-23 21:32 UTCEPSS rescore
  55. 2026-06-22 14:25 UTCEPSS rescore
  56. 2026-06-21 19:43 UTCOSV refresh
  57. 2026-06-21 14:56 UTCEPSS rescore
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  61. 2026-06-19 19:25 UTCEPSS rescore
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  63. 2026-06-18 17:52 UTCEPSS rescore
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  68. 2026-06-15 17:48 UTCEPSS rescore
  69. 2026-06-14 23:17 UTCEPSS rescore
  70. 2026-06-13 23:00 UTCEPSS rescore
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  72. 2026-06-11 14:00 UTCEPSS rescore
  73. 2026-06-11 14:00 UTCEPSS rescore
  74. 2026-06-10 22:18 UTCEPSS rescore
  75. 2026-06-10 22:18 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-53548?
CVE-2025-53548 is a high vulnerability published on July 9, 2025. Clerk helps developers build user management. Applications that use the verifyWebhook() helper to verify incoming Clerk webhooks are susceptible to accepting improperly signed webhook events. The issue was resolved in @clerk/backend 2.4.0.
When was CVE-2025-53548 disclosed?
CVE-2025-53548 was first published in the National Vulnerability Database on July 9, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-53548 actively exploited?
CVE-2025-53548 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.4% of all scored CVEs.
What is the CVSS score of CVE-2025-53548?
CVE-2025-53548 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-53548?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-53548, 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.

Dependency Blast Radius

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