CVE-2026-42613

CRITICALNVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 44% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.4Exploit: NoneExposed: 0

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

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, the Login::register() method in the Login plugin accepts attacker-controlled groups and access fields from the registration POST data without server-side validation. When registration is enabled and groups or access are included in the configured allowed fields list, an unauthenticated user can self-register with admin.super privileges by injecting these fields into the registration request. This vulnerability is fixed in 2.0.0-beta.2.

CVSS v3
9.4
EG Score
9.4(medium)
EPSS
56.7%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 12, 2026

Advisory Details (2)

Auto-updated May 11, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Privilege Escalation via Missing Server-Side Validation of groups/access · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-pxm6-mhxr-q4mj
generic

Security: registration privilege strip + Grav 2.0 nonce-key bridge · getgrav/grav-plugin-login@3d419a0 · GitHub

https://github.com/getgrav/grav-plugin-login/commit/3d419a0dabd70aed1fd49afcd5919004a4141da1

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
getgrav/grav0.8.0 ... 2.0.0-beta.1 (317 versions)2.0.0-beta.2—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 58× 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 155 total refreshes for this CVE.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:15 UTCEPSS rescore
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  1. 2026-06-23 21:33 UTCEPSS rescore
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  11. 2026-06-17 05:30 UTCEG score recompute
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  24. 2026-06-13 23:00 UTCEPSS rescore
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  26. 2026-06-12 23:12 UTCEPSS rescore
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  28. 2026-06-12 22:55 UTCEG score recompute
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  41. 2026-06-10 22:18 UTCEPSS rescore
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  44. 2026-06-10 13:22 UTCEPSS rescore
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  46. 2026-06-10 11:33 UTCEG score recompute
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  50. 2026-06-09 17:53 UTCEG score recompute
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  56. 2026-06-08 14:17 UTCEPSS rescore
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  62. 2026-06-07 20:12 UTCEG score recompute
  63. 2026-06-07 15:58 UTCEG score recompute
  64. 2026-06-07 15:25 UTCEPSS rescore
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  66. 2026-06-07 11:44 UTCEG score recompute
  67. 2026-06-07 07:31 UTCEG score recompute
  68. 2026-06-07 03:18 UTCEG score recompute
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  72. 2026-06-06 13:47 UTCEPSS rescore
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  74. 2026-06-06 10:23 UTCEG score recompute
  75. 2026-06-06 06:09 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42613?
CVE-2026-42613 is a critical vulnerability published on May 11, 2026. Grav is a file-based Web platform. Prior to 2.0.0-beta.2, the Login::register() method in the Login plugin accepts attacker-controlled groups and access fields from the registration POST data without server-side validation. When registration is enabled and groups or access are included in the…
When was CVE-2026-42613 disclosed?
CVE-2026-42613 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42613 actively exploited?
CVE-2026-42613 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42613?
CVE-2026-42613 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-42613?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42613, 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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