Administrator session compromise via live innerHTML parsing
Published Sep 17, 2026 · Updated Sep 21, 2026
Stored XSS in Vendure before 3.6.5 allows remote authenticated users to compromise an administrator session through a crafted description. RichTextDescriptionCell assigns administrator-controlled descriptions to a live element's innerHTML before reading textContent, allowing resource event handlers to execute during parsing. A lower-privilege administrator must store the markup and another administrator must view an affected list, after which the script can access the viewer's session and perform administrative actions.
Summary
What happened
Stored XSS in Vendure before 3.6.5 allows remote authenticated users to compromise an administrator session through a crafted description. RichTextDescriptionCell assigns administrator-controlled descriptions to a live element's innerHTML before reading textContent, allowing resource event handlers to execute during parsing. A lower-privilege administrator must store the markup and another administrator must view an affected list, after which the script can access the viewer's session and perform administrative actions.
The record
- CVE
- CVE-2026-63459
- Published
- Sep 17, 2026
- Updated
- Sep 21, 2026
- Vendor
- Vendure
- Product
- Vendure
- Classifications
- CWE-79, T1539
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 17, 2026CVE publishedPublication date reported by the CVE source.
- Sep 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 3.6.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
- Vendure RichTextDescriptionCell stored-XSS proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Get started to see how Hinoki identifies affected software and validates exploitability in your environment.
Get started