OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 serves RSS feeds with a text/html content type and does not escape…
CVE-2026-128041
OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 serves RSS feeds with a text/html content type and does not escape feed entry data, leading to stored cross-site scripting. An unauthenticated guest can submit a product review with script in the nickname, title or text that executes when an administrator opens the pending-reviews feed, enabling admin account takeover.
Assessment
- CVSS
- 8.8 (v4.0)
- Severity
- High
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 13 November 2026
- Last updated
- 13 November 2026
- Affected
- OpenMage · magento-lts
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
At the source
References
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-j9c5-pcvx-jx9x
- https://github.com/OpenMage/magento-lts/commit/34e88f5447dff22e4ddc8cb0952d934ac3fdd15b
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-rss-review-feed
- https://nvd.nist.gov/vuln/detail/CVE-2026-128041
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