CVE-2026-55890

Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action (CVE-2026-42841) leaves the sibling MediaObjectTrait::style method reachable through the same Markdown excerpt-action pipeline, allowing an editor to save Markdown image style parameters that are written into the rendered img style attribute without sanitization. This issue is fixed in version 2.0.0-rc.9.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/getgrav/grav/commit/24fd6cbc438e12310b126d1176e7d7601203a6f2
https://github.com/getgrav/grav/releases/tag/2.0.0-rc.9
https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54
https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54

Configurations

No configuration.

History

10 Jul 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54 -~~	() https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54 -

10 Jul 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-10 17:17

Updated : 2026-07-10 19:17

NVD link : CVE-2026-55890

Mitre link : CVE-2026-55890

CVE.ORG link : CVE-2026-55890

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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