What is CVE-2026-42843?

CVE-2026-42843 is a high-severity vulnerability in Getgrav Grav-plugin-api, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-05-11.

How severe is CVE-2026-42843?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Getgrav Grav-plugin-api

CVE-2026-42843

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content, media, configuration, users, and system management. Prior to 1.0.0-beta.15, an insecure direct object reference and logic flaw in the…

Vulnerability class: Broken Access Control

EPSS: 0.000 (14.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Getgrav Grav-plugin-api — versions 1.0.0, < 1.0.0-beta.15

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42843?: CVE-2026-42843 is a high-severity vulnerability in Getgrav Grav-plugin-api, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-05-11.
How severe is CVE-2026-42843?: High severity. CVSS v3 base score is 8.8 out of 10.