CVE-2026-61453Public exploitNetwork attack vector

Stored XSS via pre-render Twig validation

Published Jul 15, 2026 · Updated Jul 15, 2026

Stored cross-site scripting in Grav 2.0.0 allows remote authenticated users to execute JavaScript in visitors' browsers via page content. The Security::detectXss() validator inspects raw content before Twig resolves concatenated tags, attributes, and protocols, while page.content|raw emits the unchecked result. Exploitation requires page-write API permission and administrator-enabled Twig content processing; the payload persists and runs for page visitors.

CVSS severity5.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Grav 2.0.0 allows remote authenticated users to execute JavaScript in visitors' browsers via page content. The Security::detectXss() validator inspects raw content before Twig resolves concatenated tags, attributes, and protocols, while page.content|raw emits the unchecked result. Exploitation requires page-write API permission and administrator-enabled Twig content processing; the payload persists and runs for page visitors.

The record

CVE
CVE-2026-61453
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
Grav
Product
Grav
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grav · Gravversion=0 <2.0.1

Published CVSS scores

6.1VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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