CVE-2026-80203

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-29. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

The getgrav/grav-plugin-api plugin before 1.0.18 does not enforce API-key scope in the requireNotSuperTarget() function in UsersController.php across seven sensitive user-management endpoints. The check uses isSuperAdmin() on the acting account rather than verifying whether the specific API key carries super authority (via isSuperWithinScope()). As a result, an API key scoped below full super authority but belonging to a super-admin account can act against other super-admin accounts—disabling their 2FA, deleting their avatar, minting new API keys under their identity, or deleting their existing API keys.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 28, 2026
Patch available. Sources: github.
generic

Grav before 1.0.18 Authentication Bypass via Scoped API Key | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-before-1.0.18-authentication-bypass-via-scoped-api-key
github Patch Available

Scoped API key can act on super-admin accounts across seven user-management endpoints · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-94q7-vrqr-cx5v

Vendor Advisories for CVE-2026-80203(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 19× in last 7d / 19× 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. 2026-08-30 06:26 UTCGHSA enrichment
  2. 2026-08-30 02:35 UTCEG score recompute
  3. 2026-08-30 02:35 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-29 22:44 UTCGHSA enrichment
  6. 2026-08-29 18:52 UTCGHSA enrichment
  7. 2026-08-29 14:59 UTCGHSA enrichment
  8. 2026-08-29 11:07 UTCGHSA enrichment
  9. 2026-08-29 07:13 UTCGHSA enrichment
  10. 2026-08-29 03:21 UTCEG score recompute
  11. 2026-08-29 03:21 UTCGHSA enrichment
  12. 2026-08-28 23:28 UTCEG score recompute
  13. 2026-08-28 23:04 UTCEG score recompute
  14. 2026-08-28 21:42 UTCEPSS rescore
  15. 2026-08-27 18:07 UTCEG score recompute
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 18:16 UTCEG score recompute
  18. 2026-08-26 10:33 UTCEG score recompute
  19. 2026-08-26 10:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-80203?
CVE-2026-80203 is a critical vulnerability published on August 26, 2026. The getgrav/grav-plugin-api plugin before 1.0.18 does not enforce API-key scope in the requireNotSuperTarget() function in UsersController.php across seven sensitive user-management endpoints. The check uses isSuperAdmin() on the acting account rather than verifying whether the specific API key…
When was CVE-2026-80203 disclosed?
CVE-2026-80203 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80203 actively exploited?
CVE-2026-80203 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 68.4% of all scored CVEs.
What is the CVSS score of CVE-2026-80203?
CVE-2026-80203 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-80203?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80203, 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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