CVE-2026-58656

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-08. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 0

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

Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *, allowing unauthenticated attackers to make fully authenticated cross-origin API requests from any malicious website. Attackers who obtain a leaked JWT token from access logs, proxy logs, browser history, or Referrer headers can create persistent backdoor super-admin accounts and exfiltrate sensitive configuration and user data.

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
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 8, 2026

Advisory Details (2)

Auto-updated Jul 8, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav API Plugin - Cross-Origin Admin Account Takeover via CORS Wildcard and JWT Query Parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-api-plugin-cross-origin-admin-account-takeover-via-cors-wildcard-and-jwt-query-parameter
github Patch Available🟡 PoC Available

Cross-Origin Admin Account Takeover via CORS Wildcard + JWT Query Parameter Leakage · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp

Vendor Advisories for CVE-2026-58656(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 24× in last 7d / 120× 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 175 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 07:28 UTCGHSA enrichment
  3. 2026-08-24 20:35 UTCEG score recompute
  4. 2026-08-24 20:35 UTCGHSA enrichment
  5. 2026-08-24 09:43 UTCEG score recompute
  6. 2026-08-24 09:43 UTCGHSA enrichment
  7. 2026-08-23 21:17 UTCGHSA enrichment
  8. 2026-08-23 10:26 UTCEG score recompute
  9. 2026-08-23 10:26 UTCGHSA enrichment
  10. 2026-08-23 00:19 UTCEPSS rescore
  11. 2026-08-22 23:27 UTCGHSA enrichment
  12. 2026-08-22 12:35 UTCGHSA enrichment
  13. 2026-08-22 01:43 UTCEG score recompute
  14. 2026-08-22 01:43 UTCGHSA enrichment
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 14:51 UTCGHSA enrichment
  17. 2026-08-21 04:00 UTCEG score recompute
  18. 2026-08-21 03:59 UTCGHSA enrichment
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-20 15:38 UTCGHSA enrichment
  21. 2026-08-20 02:02 UTCEG score recompute
  22. 2026-08-20 02:02 UTCGHSA enrichment
  23. 2026-08-19 17:04 UTCEPSS rescore
  24. 2026-08-19 09:32 UTCGHSA enrichment
  25. 2026-08-18 22:28 UTCEG score recompute
Show 75 more
  1. 2026-08-18 22:28 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-18 10:51 UTCGHSA enrichment
  4. 2026-08-17 22:43 UTCEG score recompute
  5. 2026-08-17 22:43 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 11:51 UTCGHSA enrichment
  8. 2026-08-17 01:00 UTCEG score recompute
  9. 2026-08-17 01:00 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 14:08 UTCGHSA enrichment
  12. 2026-08-16 03:16 UTCEG score recompute
  13. 2026-08-16 03:16 UTCGHSA enrichment
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-15 16:25 UTCGHSA enrichment
  16. 2026-08-15 05:33 UTCEG score recompute
  17. 2026-08-15 05:33 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 18:41 UTCGHSA enrichment
  20. 2026-08-14 07:46 UTCEG score recompute
  21. 2026-08-14 07:46 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 20:54 UTCGHSA enrichment
  24. 2026-08-13 10:02 UTCGHSA enrichment
  25. 2026-08-12 23:10 UTCEG score recompute
  26. 2026-08-12 23:10 UTCGHSA enrichment
  27. 2026-08-12 13:51 UTCEPSS rescore
  28. 2026-08-12 12:19 UTCGHSA enrichment
  29. 2026-08-12 01:26 UTCGHSA enrichment
  30. 2026-08-11 14:34 UTCEG score recompute
  31. 2026-08-11 14:34 UTCGHSA enrichment
  32. 2026-08-11 03:42 UTCEG score recompute
  33. 2026-08-11 03:42 UTCGHSA enrichment
  34. 2026-08-11 00:00 UTCEPSS rescore
  35. 2026-08-10 16:51 UTCGHSA enrichment
  36. 2026-08-10 04:41 UTCGHSA enrichment
  37. 2026-08-09 17:50 UTCEG score recompute
  38. 2026-08-09 17:50 UTCGHSA enrichment
  39. 2026-08-09 13:46 UTCEPSS rescore
  40. 2026-08-09 06:58 UTCGHSA enrichment
  41. 2026-08-08 20:07 UTCEG score recompute
  42. 2026-08-08 20:07 UTCGHSA enrichment
  43. 2026-08-08 16:37 UTCEPSS rescore
  44. 2026-08-08 09:15 UTCGHSA enrichment
  45. 2026-08-07 22:23 UTCEG score recompute
  46. 2026-08-07 22:23 UTCGHSA enrichment
  47. 2026-08-07 11:31 UTCGHSA enrichment
  48. 2026-08-07 00:38 UTCEG score recompute
  49. 2026-08-07 00:38 UTCGHSA enrichment
  50. 2026-08-06 13:47 UTCEPSS rescore
  51. 2026-08-06 13:46 UTCGHSA enrichment
  52. 2026-08-06 02:45 UTCEG score recompute
  53. 2026-08-06 02:45 UTCGHSA enrichment
  54. 2026-08-05 19:17 UTCEPSS rescore
  55. 2026-08-05 15:53 UTCGHSA enrichment
  56. 2026-08-05 01:32 UTCEG score recompute
  57. 2026-08-05 01:32 UTCGHSA enrichment
  58. 2026-08-04 15:10 UTCEPSS rescore
  59. 2026-08-04 14:41 UTCEG score recompute
  60. 2026-08-04 14:41 UTCGHSA enrichment
  61. 2026-08-04 10:39 UTCEPSS rescore
  62. 2026-08-04 03:49 UTCGHSA enrichment
  63. 2026-08-03 16:58 UTCEG score recompute
  64. 2026-08-03 16:58 UTCGHSA enrichment
  65. 2026-08-03 10:36 UTCEPSS rescore
  66. 2026-08-03 06:06 UTCGHSA enrichment
  67. 2026-08-02 19:14 UTCGHSA enrichment
  68. 2026-08-02 08:22 UTCEG score recompute
  69. 2026-08-02 08:22 UTCGHSA enrichment
  70. 2026-08-02 02:27 UTCEPSS rescore
  71. 2026-08-01 21:30 UTCGHSA enrichment
  72. 2026-08-01 10:39 UTCEG score recompute
  73. 2026-08-01 10:39 UTCGHSA enrichment
  74. 2026-08-01 04:16 UTCEPSS rescore
  75. 2026-07-31 23:42 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-58656?
CVE-2026-58656 is a high vulnerability published on July 8, 2026. Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *, allowing unauthenticated attackers to make fully authenticated cross-origin API requests from any malicious website. Attackers who obtain a leaked JWT token…
When was CVE-2026-58656 disclosed?
CVE-2026-58656 was first published in the National Vulnerability Database on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58656 actively exploited?
CVE-2026-58656 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 62.7% of all scored CVEs.
What is the CVSS score of CVE-2026-58656?
CVE-2026-58656 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-58656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58656, 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

Explore the affected products and dependency analysis for CVE-2026-58656

Explore →

Is Your Infrastructure Affected by CVE-2026-58656?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs