Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-33137

XWiki Platform has an Unauthenticated XAR Import via REST /wikis/{wikiName}
Back to all
CVE

CVE-2026-33137

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

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. XWiki Platform is a generic wiki platform. In versions starting with 15.10.6 and prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17, the POST /wikis/{wikiName} API executes a XAR import without performing any authentication or authorization checks, allowing an unauthenticated attacker to create or update documents in the target wiki. This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, 18.0.1 and 18.1.0-rc-1.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://jira.xwiki.org/browse/XWIKI-23953, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33137.json, https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-qrvh-r3f2-9h4r, https://nvd.nist.gov/vuln/detail/CVE-2026-33137, https://github.com/xwiki/xwiki-platform/commit/4b7b95b79256374d487e9ece1dc48f527966990f

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00594%
EPSS Percentile
0.45753%
Introduced Version
d611720cbb5e818a686a98a452b4bead37798b24
Fix Available
4b7b95b79256374d487e9ece1dc48f527966990f

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading