Administrator session hijacking via unsanitized CMS content
Published Jan 2, 2026 · Updated Jan 2, 2026
Stored XSS in the CMS page editor in Webkul Bagisto before 2.3.10 allows remote authenticated users to execute JavaScript. The update endpoint accepts a manipulated html_content POST field without server-side stripping or encoding and stores the embedded script for later rendering. Administrative CMS access is required to plant the payload; execution when the page is viewed or edited can hijack an administrator session and alter storefront content.
Summary
What happened
Stored XSS in the CMS page editor in Webkul Bagisto before 2.3.10 allows remote authenticated users to execute JavaScript. The update endpoint accepts a manipulated html_content POST field without server-side stripping or encoding and stores the embedded script for later rendering. Administrative CMS access is required to plant the payload; execution when the page is viewed or edited can hijack an administrator session and alter storefront content.
The record
- CVE
- CVE-2026-21451
- Published
- Jan 2, 2026
- Updated
- Jan 2, 2026
- Vendor
- Bagisto
- Product
- Bagisto
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jan 2, 2026CVE publishedPublication date reported by the CVE source.
- Jan 2, 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.
- Affected versionversion=< 2.3.10
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.
Weakness, pattern, technique
Public exploit references
- GHSA CMS editor reproduction procedureproof of concept · demonstrated
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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