CVE-2026-42611

Grav: Stored XSS via Tag Injection

HIGH
8.9
CVSS Score
Published: May 11, 2026 at 03:20 PM UTC
Updated: October 26, 2026 at 06:10 PM UTC
1 product affected across 1 vendorGrav

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Severity
HIGH8.9
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Grav 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v ≤ 1.8.02.0.02.0.0 beta1
Affected range stops below 2.0.0-beta.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_CONFIRMExploitPatchVendor Advisory
Source: cverecord
https://github.com/getgrav/grav/security/advisories/GHSA-w8cg-7jcj-4vv2

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.9HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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