CVE-2026-59504

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-13. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

CWE-602: Client-Side Enforcement of Server-Side Security

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 13, 2026

References (1)

Vendor Advisories for CVE-2026-59504(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 57× in last 7d / 72× 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.

  1. 2026-08-21 05:27 UTCGHSA enrichment
  2. 2026-08-21 01:36 UTCEG score recompute
  3. 2026-08-21 01:36 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 21:45 UTCGHSA enrichment
  6. 2026-08-20 17:55 UTCGHSA enrichment
  7. 2026-08-20 14:04 UTCGHSA enrichment
  8. 2026-08-20 09:56 UTCGHSA enrichment
  9. 2026-08-20 06:06 UTCGHSA enrichment
  10. 2026-08-20 02:15 UTCGHSA enrichment
  11. 2026-08-19 22:24 UTCGHSA enrichment
  12. 2026-08-19 18:31 UTCEG score recompute
  13. 2026-08-19 18:31 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 14:35 UTCGHSA enrichment
  16. 2026-08-19 10:41 UTCGHSA enrichment
  17. 2026-08-19 06:46 UTCGHSA enrichment
  18. 2026-08-19 02:55 UTCGHSA enrichment
  19. 2026-08-18 22:57 UTCGHSA enrichment
  20. 2026-08-18 19:07 UTCGHSA enrichment
  21. 2026-08-18 15:13 UTCEG score recompute
  22. 2026-08-18 15:13 UTCGHSA enrichment
  23. 2026-08-18 13:48 UTCEPSS rescore
  24. 2026-08-18 10:55 UTCGHSA enrichment
  25. 2026-08-18 07:04 UTCGHSA enrichment
Show 47 more
  1. 2026-08-18 03:10 UTCGHSA enrichment
  2. 2026-08-17 23:17 UTCGHSA enrichment
  3. 2026-08-17 19:26 UTCGHSA enrichment
  4. 2026-08-17 15:35 UTCEG score recompute
  5. 2026-08-17 15:35 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 11:44 UTCGHSA enrichment
  8. 2026-08-17 07:52 UTCGHSA enrichment
  9. 2026-08-17 04:02 UTCGHSA enrichment
  10. 2026-08-17 00:11 UTCGHSA enrichment
  11. 2026-08-16 20:20 UTCGHSA enrichment
  12. 2026-08-16 16:29 UTCEG score recompute
  13. 2026-08-16 16:29 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 12:39 UTCGHSA enrichment
  16. 2026-08-16 08:48 UTCGHSA enrichment
  17. 2026-08-16 04:57 UTCEG score recompute
  18. 2026-08-16 04:57 UTCGHSA enrichment
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-16 01:07 UTCGHSA enrichment
  21. 2026-08-15 21:16 UTCGHSA enrichment
  22. 2026-08-15 17:25 UTCGHSA enrichment
  23. 2026-08-15 13:34 UTCGHSA enrichment
  24. 2026-08-15 09:43 UTCGHSA enrichment
  25. 2026-08-15 05:52 UTCGHSA enrichment
  26. 2026-08-15 02:01 UTCEG score recompute
  27. 2026-08-15 02:01 UTCGHSA enrichment
  28. 2026-08-15 01:30 UTCEPSS rescore
  29. 2026-08-14 22:10 UTCGHSA enrichment
  30. 2026-08-14 18:20 UTCGHSA enrichment
  31. 2026-08-14 14:29 UTCGHSA enrichment
  32. 2026-08-14 10:39 UTCGHSA enrichment
  33. 2026-08-14 06:48 UTCGHSA enrichment
  34. 2026-08-14 02:58 UTCGHSA enrichment
  35. 2026-08-13 23:07 UTCEG score recompute
  36. 2026-08-13 23:07 UTCGHSA enrichment
  37. 2026-08-13 22:00 UTCEPSS rescore
  38. 2026-08-13 19:16 UTCGHSA enrichment
  39. 2026-08-13 15:25 UTCEG score recompute
  40. 2026-08-13 15:25 UTCGHSA enrichment
  41. 2026-08-13 15:14 UTCEG score recompute
  42. 2026-08-13 15:14 UTCGHSA enrichment
  43. 2026-08-13 14:18 UTCEG score recompute
  44. 2026-08-13 14:18 UTCGHSA enrichment
  45. 2026-08-13 10:28 UTCEG score recompute
  46. 2026-08-13 09:47 UTCEG score recompute
  47. 2026-08-13 09:46 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-59504?
CVE-2026-59504 is a critical vulnerability published on August 13, 2026. CWE-602: Client-Side Enforcement of Server-Side Security
When was CVE-2026-59504 disclosed?
CVE-2026-59504 was first published in the National Vulnerability Database on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59504 actively exploited?
CVE-2026-59504 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 66.8% of all scored CVEs.
What is the CVSS score of CVE-2026-59504?
CVE-2026-59504 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-59504?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59504, 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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