CVE-2026-64852

HIGHPre-NVD 8.78.7
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd 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
Elevated
8.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.7Exploit: No code on recordExposed 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 1.0.8, the Grav API plugin intercepts the apiKeyGenerate and apiKeyRevoke admin tasks in user/plugins/api/api.php and authorizes the caller with only admin.login. A basic panel user can select another account from the route, create a persistent ApiKeyManager credential bound to that target, and inherit the target's API permissions, including api.super or administrative write access when present. This issue is fixed in version 1.0.8.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
55
EG Risk 55/100

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)
Severity87% × 45%
The EG Score, 8.7 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (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 advisoryMentions a patch (unverified)

Missing authorization on API-key generate/revoke lets any admin.login user forge keys for any account · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-7v74-m76q-8wf3
GitHub release Patch Available

1.0.8

Patch available: getgrav/grav-plugin-api 1.0.8

https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.8
GitHub commit Patch Available

commit ed16f0aaa9b3 (getgrav/grav-plugin-api)

Patch available: getgrav/grav-plugin-api 1.0.8 (contains commit ed16f0aaa9b3)

https://github.com/getgrav/grav-plugin-api/commit/ed16f0aaa9b398c6f179fb8f51e0fa53e4ed8a30

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 49× 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. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-13 11:26 UTCEG score recompute
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-12 15:47 UTCEG score recompute
  5. 2026-10-11 19:32 UTCEG score recompute
  6. 2026-10-11 16:47 UTCEG score recompute
  7. 2026-10-11 14:08 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-08 08:24 UTCEG score recompute
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-06 19:23 UTCEG score recompute
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-10-06 07:58 UTCEG score recompute
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-05 02:43 UTCEG score recompute
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-10-03 16:56 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-10-02 21:37 UTCEG score recompute
  23. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  24. 2026-10-01 22:47 UTCEG score recompute
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
Show 71 more
  1. 2026-09-30 20:35 UTCEG score recompute
  2. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-09-30 08:46 UTCEG score recompute
  4. 2026-09-28 21:43 UTCEG score recompute
  5. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-09-27 17:59 UTCEG score recompute
  7. 2026-09-27 06:59 UTCEG score recompute
  8. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-09-24 19:45 UTCEG score recompute
  10. 2026-09-23 20:59 UTCEG score recompute
  11. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-09-22 22:58 UTCEG score recompute
  13. 2026-09-22 00:51 UTCEG score recompute
  14. 2026-09-21 02:40 UTCEG score recompute
  15. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  16. 2026-09-19 17:38 UTCEG score recompute
  17. 2026-09-18 19:37 UTCEG score recompute
  18. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  19. 2026-09-17 21:32 UTCEG score recompute
  20. 2026-09-16 21:48 UTCEG score recompute
  21. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-16 09:51 UTCEG score recompute
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  24. 2026-09-15 11:18 UTCEG score recompute
  25. 2026-09-14 01:57 UTCEG score recompute
  26. 2026-09-12 16:43 UTCEG score recompute
  27. 2026-09-11 18:41 UTCEG score recompute
  28. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  29. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  30. 2026-09-10 09:39 UTCEG score recompute
  31. 2026-09-09 02:36 UTCEG score recompute
  32. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  33. 2026-09-08 02:42 UTCEG score recompute
  34. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  35. 2026-09-06 14:58 UTCEG score recompute
  36. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  37. 2026-09-05 16:57 UTCEG score recompute
  38. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-09-04 18:51 UTCEG score recompute
  40. 2026-09-04 07:17 UTCEG score recompute
  41. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  42. 2026-09-02 21:19 UTCEG score recompute
  43. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  44. 2026-09-01 19:57 UTCEG score recompute
  45. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  46. 2026-09-01 08:20 UTCEG score recompute
  47. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  48. 2026-08-30 22:19 UTCEG score recompute
  49. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  50. 2026-08-30 11:19 UTCEG score recompute
  51. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  52. 2026-08-29 01:55 UTCEG score recompute
  53. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  54. 2026-08-28 00:45 UTCEG score recompute
  55. 2026-08-26 15:33 UTCEG score recompute
  56. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  57. 2026-08-25 17:31 UTCEG score recompute
  58. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  59. 2026-08-24 19:27 UTCEG score recompute
  60. 2026-08-23 10:24 UTCEG score recompute
  61. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  62. 2026-08-22 01:24 UTCEG score recompute
  63. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  64. 2026-08-21 03:19 UTCEG score recompute
  65. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  66. 2026-08-20 05:19 UTCEG score recompute
  67. 2026-08-19 18:18 UTCEG score recompute
  68. 2026-08-19 17:28 UTCEG score recompute
  69. 2026-08-19 16:24 UTCEG score recompute
  70. 2026-08-19 16:12 UTCEG score recomputeFirst assessed: 8.7 HIGH
  71. 2026-08-19 16:12 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-64852?
CVE-2026-64852 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 1.0.8, the Grav API plugin intercepts the apiKeyGenerate and apiKeyRevoke admin tasks in user/plugins/api/api.php and authorizes the caller with only admin.login. A basic panel user can…
When was the CVE record for CVE-2026-64852 published?
The CVE record for CVE-2026-64852 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-2026-64852 actively exploited?
CVE-2026-64852 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64852?
CVE-2026-64852 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-64852?
A fix for CVE-2026-64852 is available: update to the fixed version the vendor names in its advisory.

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