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CVE-2026-55790

HIGH
7.4
CVSS 4.0
Description
Craft CMS is a content management system (CMS). In versions 5.0.0-RC1 through 5.9.22 and 4.0.0-RC1 through 4.17.15, an attacker with only a GitHub account can plant a JavaScript payload in a craftcms/cms issue title. When a Craft admin uses the CraftSupport widget’s "Give feedback" screen and types a search term that returns the poisoned issue, the payload executes in the admin’s control panel session. No control panel account or elevated privileges are required on the attacker’s side. This issue has been fixed in versions 4.17.16 and 5.9.23.

Metadata

CVE ID
CVE-2026-55790
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-17 14:40 UTC
Published
2026-07-01 22:57 UTC
Last updated
2026-07-01 22:57 UTC
Primary CWE
CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product
craftcms / cms
Sources
cve.org  ·  NVD

Severity & Metrics

7.4 HIGH CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products (1)
VendorProductPlatformVersions
craftcms cms — >= 5.0.0-RC1, < 5.9.23, >= 4.0.0-RC1, < 4.17.16
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.4 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References (2)
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