CVE-2026-62387

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-17. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 0

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

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 shipped Access-Control-Allow-Origin: * as its default CORS configuration on all responses, including authenticated endpoints and preflight (OPTIONS) responses. Because the plugin accepts credentials via the Authorization and X-API-Token headers (set programmatically by JavaScript rather than via cookies), an attacker who obtains a valid access token (e.g., via log leakage, Referer headers, browser history, or network capture) can issue fully authenticated cross-origin requests from any malicious website to read sensitive data and perform write operations as the token's user. Fixed in 1.0.0-rc.16.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 17, 2026

Advisory Details (2)

Auto-updated Jul 17, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav < 1.0.0-rc.16 CORS Misconfiguration via API Plugin | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-rc-16-cors-misconfiguration-via-api-plugin
github Patch Available🟡 PoC Available

CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2

Vendor Advisories for CVE-2026-62387(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 10× in last 7d / 78× 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 170 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-62387?
CVE-2026-62387 is a high vulnerability published on July 17, 2026. The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 shipped Access-Control-Allow-Origin: * as its default CORS configuration on all responses, including authenticated endpoints and preflight (OPTIONS) responses. Because the plugin accepts credentials via the Authorization and…
When was CVE-2026-62387 disclosed?
CVE-2026-62387 was first published in the National Vulnerability Database on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62387 actively exploited?
CVE-2026-62387 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 72.8% of all scored CVEs.
What is the CVSS score of CVE-2026-62387?
CVE-2026-62387 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-62387?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62387, 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-2026-62387

Explore →

Is Your Infrastructure Affected by CVE-2026-62387?

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

Start Free Scan →Browse All CVEs