Grav: Stored XSS via Tag Injection

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Summary

CVECVE-2026-42611
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-11 16:17:34 UTC
Updated2026-05-12 16:16:44 UTC
DescriptionGrav is a file-based Web platform. Prior to 2.0.0-beta.2, a low-privileged (with the ability to create a page) user can cause XSS with the injection of svg element. The XSS can further be escalated to dump the entire system information available under /admin/config/info whenever a Super Admin visits the page; which can further be chained with the use of admin-nonce to do a complete server compromise (RCE). This vulnerability is fixed in 2.0.0-beta.2.

Risk And Classification

Primary CVSS: v3.1 8.9 HIGH from [email protected]

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

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.9HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:H
3.1CNADECLARED8.9HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Getgrav Grav 2.0.0 beta1 All All
Application Getgrav Grav All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Getgrav Grav affected < 2.0.0-beta.2 Not specified

References

ReferenceSourceLinkTags
github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 [email protected] github.com Patch
github.com/getgrav/grav/security/advisories/GHSA-w8cg-7jcj-4vv2 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Exploit, Patch, Vendor Advisory
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