CVE-2026-62666

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.6, Grav API plugin UsersController::createApiKey(), generate2fa(), and disable2fa() omit the accessGrantsSuper() target check used by sibling user mutation endpoints. A non-super account with api.users.write can mint an API key bound to an access.api.super target through requireApiKeyPermission(), obtain the target's full privileges because key scopes are not enforced, and create persistent super-administrator access; the same missing check also permits rotating or disabling the target's two-factor authentication. This issue is fixed in version 1.0.6.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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 (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 19, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

1.0.6

Patch available: getgrav/grav-plugin-api 1.0.6

https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.6
GitHub commit Patch Available

commit dfcc947f0d67 (getgrav/grav-plugin-api)

Patch available: getgrav/grav-plugin-api 1.0.6 (contains commit dfcc947f0d67)

https://github.com/getgrav/grav-plugin-api/commit/dfcc947f0d6758772caac290c68fe8d4c4a4874e
GitHub advisoryMentions a patch (unverified)

Privilege escalation in grav-plugin-api: non-super api.users.write manager -> super-admin via createApiKey (incomplete fix of GHSA-p97c); + 2FA strip of super · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-8gg4-rvvv-cq96

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 46× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-11 19:34 UTCEG score recompute
  2. 2026-10-11 16:49 UTCEG score recompute
  3. 2026-10-11 14:10 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-10-08 08:25 UTCEG score recompute
  9. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-10-06 21:22 UTCEG score recompute
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-10-06 07:58 UTCEG score recompute
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-10-05 09:37 UTCEG score recompute
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  16. 2026-10-03 16:56 UTCEG score recompute
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-10-03 00:42 UTCEG score recompute
  19. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  20. 2026-10-01 22:47 UTCEG score recompute
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-09-30 20:56 UTCEG score recompute
  23. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  24. 2026-09-30 08:46 UTCEG score recompute
  25. 2026-09-28 21:43 UTCEG score recompute
Show 66 more
  1. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-09-27 19:10 UTCEG score recompute
  3. 2026-09-27 06:59 UTCEG score recompute
  4. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-09-25 00:53 UTCEG score recompute
  6. 2026-09-23 20:13 UTCEG score recompute
  7. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-09-22 19:50 UTCEG score recompute
  9. 2026-09-22 06:53 UTCEG score recompute
  10. 2026-09-21 06:31 UTCEG score recompute
  11. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-09-19 17:05 UTCEG score recompute
  13. 2026-09-19 04:51 UTCEG score recompute
  14. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-09-18 03:56 UTCEG score recompute
  16. 2026-09-16 15:08 UTCEG score recompute
  17. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  19. 2026-09-15 14:45 UTCEG score recompute
  20. 2026-09-14 01:55 UTCEG score recompute
  21. 2026-09-13 01:33 UTCEG score recompute
  22. 2026-09-12 01:11 UTCEG score recompute
  23. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  24. 2026-09-11 13:00 UTCEG score recompute
  25. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  26. 2026-09-10 12:19 UTCEG score recompute
  27. 2026-09-09 02:37 UTCEG score recompute
  28. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  29. 2026-09-07 21:44 UTCEG score recompute
  30. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  31. 2026-09-06 20:23 UTCEG score recompute
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  33. 2026-09-05 19:53 UTCEG score recompute
  34. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  35. 2026-09-04 19:31 UTCEG score recompute
  36. 2026-09-04 07:19 UTCEG score recompute
  37. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  38. 2026-09-02 16:47 UTCEG score recompute
  39. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  40. 2026-09-01 16:20 UTCEG score recompute
  41. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  42. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  43. 2026-08-31 03:04 UTCEG score recompute
  44. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  45. 2026-08-30 02:40 UTCEG score recompute
  46. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  47. 2026-08-29 01:55 UTCEG score recompute
  48. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  49. 2026-08-27 22:47 UTCEG score recompute
  50. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  51. 2026-08-26 22:22 UTCEG score recompute
  52. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  53. 2026-08-25 21:53 UTCEG score recompute
  54. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  55. 2026-08-24 21:31 UTCEG score recompute
  56. 2026-08-23 08:57 UTCEG score recompute
  57. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  58. 2026-08-22 08:35 UTCEG score recompute
  59. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  60. 2026-08-21 20:23 UTCEG score recompute
  61. 2026-08-21 19:44 UTCEG score recompute
  62. 2026-08-21 04:58 UTCEG score recompute
  63. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  64. 2026-08-19 16:24 UTCEG score recompute
  65. 2026-08-19 15:48 UTCEG score recomputeFirst assessed: 8.8 HIGH
  66. 2026-08-19 15:48 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-62666?
CVE-2026-62666 is a high-severity vulnerability; its CVE record was published on August 19, 2026. Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.6, Grav API plugin UsersController::createApiKey(), generate2fa(), and disable2fa() omit the accessGrantsSuper() target check used by sibling user mutation endpoints. A non-super…
When was the CVE record for CVE-2026-62666 published?
The CVE record for CVE-2026-62666 was published on August 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-62666 actively exploited?
CVE-2026-62666 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62666?
CVE-2026-62666 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-62666?
A fix for CVE-2026-62666 is available: update to the fixed version the vendor names in its advisory.

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