CVE-2026-33137

critical

Published 2026-05-20 · Modified 2026-05-26

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS v4 NEW

9.3

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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

VIR risk

9.5

Description

XWiki Platform has an Unauthenticated XAR Import via REST /wikis/{wikiName}

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	org.xwiki.platform:xwiki-platform-rest-server	`>=15.10.6,<16.10.17`	`16.10.17`
Maven	org.xwiki.platform:xwiki-platform-rest-server	`>=17.0.0-rc-1,<17.4.9`	`17.4.9`
Maven	org.xwiki.platform:xwiki-platform-rest-server	`>=17.5.0,<17.10.3`	`17.10.3`
Maven	org.xwiki.platform:xwiki-platform-rest-server	`>=18.0.0-rc-1,<18.1.0-rc-1`	`18.1.0-rc-1`
MAVEN	org.xwiki.platform:xwiki-platform-rest-server	`>= 18.0.0-rc-1, < 18.1.0-rc-1`	`18.1.0-rc-1`
MAVEN	org.xwiki.platform:xwiki-platform-rest-server	`>= 17.5.0, < 17.10.3`	`17.10.3`
MAVEN	org.xwiki.platform:xwiki-platform-rest-server	`>= 17.0.0-rc-1, < 17.4.9`	`17.4.9`
MAVEN	org.xwiki.platform:xwiki-platform-rest-server	`>= 15.10.6, < 16.10.17`	`16.10.17`

References

CWEs

CWE-862

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.