MEDIUM 5.4 NVD
CVE-2026-55779
Silverstripe Versioned provides versioning for Silverstripe models. Prior to 3.2.1, RestoreAction::getRestoreMessage() in src/RestoreAction.php builds ArchiveAd
Silverstripe Versioned provides versioning for Silverstripe models. Prior to 3.2.1, RestoreAction::getRestoreMessage() in src/RestoreAction.php builds ArchiveAdmin restore notifications rendered as CAST_HTML and inserts $restoredItem->Title, $restoredItem->URLSegment, $restoredItem->CMSEditLink(), and $changedProperty['value'] without applying Convert::raw2xml(). When an administrator restores an archived page containing a crafted title or URL segment, the generated restoration message can execute stored JavaScript in the administrator's browser, compromising the confidentiality and integrity of the CMS session. This issue is fixed in version 3.2.1.
References
- https://github.com/silverstripe/silverstripe-versioned/commit/6e30a2cf8d4b9233690464da61bd
- https://github.com/silverstripe/silverstripe-versioned/pull/541
- https://github.com/silverstripe/silverstripe-versioned/releases/tag/3.2.1
- https://github.com/silverstripe/silverstripe-versioned/security/advisories/GHSA-m4g4-86qc-
- https://www.silverstripe.org/download/security-releases/cve-2026-55779
This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-08-28 via NVD.
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