CVE-2026-55793: 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.

unknownCVE-2026-55793

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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: unknown
Published: 2026-07-01
Last updated: 2026-07-02
Exploitation: Not in CISA KEV at last sync

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

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-557930.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-55793	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

mediumGHSA-xrqc-p465-2xvg: Craft CMS: Stored XSS via Structure entry title in table viewghsa

Recent advisories for Craft CMS is

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highGHSA-86vw-x4ww-x467: Craft CMS: RCE via missing cleanseConfig in FieldsController::actionRenderCardPreviewghsa · 2026-07-09
lowGHSA-c43v-4cr8-6mvp: Craft CMS has authenticated path traversal in `assets/icon`, allowing local `.svg` file r…ghsa · 2026-07-09
highGHSA-f74w-488g-8x5r: Craft CMS: Potential authenticated Remote Code Execution via referrer redirectghsa · 2026-07-06
mediumGHSA-xrqc-p465-2xvg: Craft CMS: Stored XSS via Structure entry title in table viewghsa · 2026-07-06
mediumGHSA-287w-mxq6-x2cp: Craft CMS: Sensitive File Disclosure / Server-Side File Readghsa · 2026-07-06
highGHSA-24x4-j6x9-rfw5: Craft CMS: DOM XSS via GitHub issue title in CraftSupport widgetghsa · 2026-07-06