TI-2026-40279 Aliases CVE-2026-55793 GHSA-xrqc-p465-2xvg

Craft CMS: Stored XSS via Structure entry title in table view

MEDIUM 60CWE-79Published 2026-07-01 · Updated 2026-07-02

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: Present
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Craft CMS is a content management system (CMS). In versions 5.0.0-RC1 through 5.9.22, an author-level control panel user can store a malicious JavaScript payload in an entry title. When an admin, or any control panel user with saveEntries for the same Structure section, drags another entry under the poisoned entry in table view, the payload executes in the victim’s session. The issue is exploitable because the title is escaped into data-title by the server, decoded again by the browser, read with jQuery .data('title'), and then concatenated into a new HTML string without attribute escaping. To exploit, an attacker must have an existing control panel account (Author role minimum), the victim must perform a drag operation (not just visit the page), and the victim’s session needs to be elevated at trigger time. This issue has been fixed in version 5.9.23.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00318 24th percentileScored 2026-11-07

Fix Fixed cms (craftcms): 5.9.23craftcms/cms (Packagist): 5.9.53

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Craft CMS	cms	5.0.0-RC1 to before 5.9.23	5.9.23	Patch available	CNA
—	craftcms/cms (Packagist)	5.0.0-RC1 to before 5.9.53	5.9.53	Patch available	GHSA-xrqc-p465-2xvg

cms VendorCraft CMS Affected 5.0.0-RC1 to before 5.9.23 Fixed in 5.9.23 Patch available CNA
craftcms/cms (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.9.53 Fixed in 5.9.53 Patch available GHSA-xrqc-p465-2xvg

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:craftcms:craft_cms::::::::	—	—	Craft CMS

cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions — — ·Craft CMS

Remediation

Fix · CNA cms (craftcms) Fixed in 5.9.23
Fix · GHSA-xrqc-p465-2xvg craftcms/cms (Packagist) Fixed in 5.9.53 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-55793
2026-10-03 Alias added: GHSA-xrqc-p465-2xvg

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-55793

Other 3

TI-2025-23503 Craft CMS Allows Remote Code Execution KEVCVSS 3.1CRITICAL 10.0
TI-2024-37138 RCE when PHP `register_argc_argv` config setting is enabled in craftcms/cms KEVCVSS 4.0CRITICAL 9.3
TI-2025-16994 Potential RCE with a compromised security key in craft/cms KEVCVSS 3.1HIGH 8.1
TI-2025-24595 Craft CMS stores user-provided content in session files KEVCVSS 4.0MEDIUM 6.9
TI-2023-22284 Craft CMS Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
TI-2024-25171 Craft CMS up to v3.7.31 was discovered to contain a SQL injection vulnerability via the GraphQL API endpoint. CVSS 3.1CRITICAL 9.8

See all 203 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences