org.xwiki.platform:xwiki-platform-oldcore may leak data through deleted and re-created documents

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

• CVE-2023-37911: 0.94% estimated exploitation activity in the next 30 days; percentile 60.82 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact When a document has been deleted and re-created, it is possible for users with view right on the re-created document but not on the deleted document to view the contents of the deleted document. Such a situation might arise when rights were added to the deleted document. This can be exploited through the diff feature and, partially, through the REST API by using versions such as deleted:1 (where the number counts the deletions in the wiki and is thus guessable). Given sufficient rights, the attacker can also re-create the deleted document, thus extending the scope to any deleted document as long as the attacker has edit right in the location of the deleted document. Patches This vulnerability has been patched in XWiki 14.10.8 and 15.3 RC1 by properly checking rights when deleted revisions of a document are accessed. Workarounds The only workaround is to regularly clean deleted documents to minimize the potential exposure. Extra care should be taken when deleting sensitive…

Published by the source

25 Oct 2023, 21:06 UTC

Last modified by the source

10 Nov 2023, 05:03 UTC

Source last checked

26 Oct 2026, 16:17 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-gh64-qxh5-4m33

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# Patch Next advisory brief: CVE-2023-37911

Advisory: org.xwiki.platform:xwiki-platform-oldcore may leak data through deleted and re-created documents
IDs: CVE-2023-37911, GHSA-gh64-qxh5-4m33
Record: https://patchnext.com/advisories/cve-2023-37911 (revision 1, source checked 26 Oct 2026, 16:17 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.xwiki.platform:xwiki-platform-oldcore 15.3-rc-1, 14.10.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.xwiki.platform:xwiki-platform-oldcore: affected >= 9.4-rc-1, < 14.10.8; >= 15.0-rc-1, < 15.3-rc-1; fixed in 14.10.8, 15.3-rc-1

## Suggested inspection (read-only)
- Maven org.xwiki.platform:xwiki-platform-oldcore: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.xwiki.platform:xwiki-platform-oldcore.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-gh64-qxh5-4m33 (GitHub-reviewed advisory GHSA-gh64-qxh5-4m33 lists affected ranges: Maven org.xwiki.platform:xwiki-platform-oldcore >=9.4-rc-1 =15.0-rc-1 <15.3-rc-1)

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