CVE-2026-25491Public exploitNetwork attack vector

Stored XSS via unencoded Entry Type label

Published Feb 9, 2026 · Updated Feb 9, 2026

Stored XSS in Craft CMS 5.0.0-RC1 through 5.8.21 allows remote authenticated users to execute JavaScript via an Entry Type name. In Entries::getTableData(), the untrusted getUiLabel() result is passed as labelHtml to Html::a() without HTML encoding in the Entry Types table. Exploitation requires an administrator account and allowAdminChanges enabled; the payload runs when the table renders in another administrator's browser.

CVSS severity4.8
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Craft CMS 5.0.0-RC1 through 5.8.21 allows remote authenticated users to execute JavaScript via an Entry Type name. In Entries::getTableData(), the untrusted getUiLabel() result is passed as labelHtml to Html::a() without HTML encoding in the Entry Types table. Exploitation requires an administrator account and allowAdminChanges enabled; the payload runs when the table renders in another administrator's browser.

The record

CVE
CVE-2026-25491
Published
Feb 9, 2026
Updated
Feb 9, 2026
Vendor
Pixel & Tonic
Product
Craft CMS
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 9, 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=>= 5.0.0-RC1, < 5.8.22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Pixel & Tonic · Craft CMSversion=>= 5.0.0-RC1, < 5.8.22

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
1.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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