CVE-2026-42612

Description

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a stored Cross-Site Scripting (XSS) vulnerability in getgrav/grav allows publisher-level accounts to execute arbitrary JavaScript. The issue arises from a blacklist bypass in the detectXss() function when handling unquoted HTML event attributes. This vulnerability is fixed in 2.0.0-beta.2.

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CVSS v3.1 Score

8.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS — Exploit Prediction

0.0003

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
getgrav	grav	< 1.8.0
getgrav	grav	All

References

Advisories & Patches

https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 https://github.com/getgrav/grav/security/advisories/GHSA-9695-8fr9-hw5q https://github.com/getgrav/grav/security/advisories/GHSA-9695-8fr9-hw5q

Exploits

https://github.com/getgrav/grav/security/advisories/GHSA-9695-8fr9-hw5q https://github.com/getgrav/grav/security/advisories/GHSA-9695-8fr9-hw5q

Frequently Asked Questions

What is CVE-2026-42612? +

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a stored Cross-Site Scripting (XSS) vulnerability in getgrav/grav allows publisher-level accounts to execute arbitrary JavaScript. The issue arises from a blacklist bypass in the detectXss() function when handling unquoted HTML event attributes. This vulnerability is fixed in 2.0.0-beta.2. It has a CVSS v3.1 base score of 8.5 (HIGH).

How severe is CVE-2026-42612? +

CVE-2026-42612 has a CVSS v3.1 score of 8.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0003, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-42612? +

CVE-2026-42612 affects products from getgrav, specifically: grav. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-42612? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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