CVE-2026-128041
OpenMage magento-lts before 20.18.2 Stored XSS via RSS Review Feed
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| magento-lts OpenMage |
≥ 0; < 20.18.2 (affected, semver) 20.18.2 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| magento-lts OpenMage |
≥ 21.0.0-beta1; < 21.0.0-beta3 (affected, semver) 21.0.0-beta3 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.8 high |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N | CNA: VulnCheck |
| 3.1 / 8.0 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N | CNA: VulnCheck |
| 4.0 / 8.8 high |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 8.0 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-j9c5-pcvx-jx9xCNA: VulnCheck · vendor-advisory
- https://github.com/OpenMage/magento-lts/commit/34e88f5447dff22e4ddc8cb0952d934ac3fdd15bCNA: VulnCheck · patch
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-rss-review-feedCNA: VulnCheck · third-party-advisory
- https://github.com/OpenMage/magento-lts/commit/34e88f5447dff22e4ddc8cb0952d934ac3fdd15b[email protected]
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-j9c5-pcvx-jx9x[email protected]
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-rss-review-feed[email protected]
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