RCE in Xwiki
CVE-2023-26477
XWiki Platform is a generic wiki platform. Starting in versions 6.3-rc-1 and 6.2.4, it's possible to inject arbitrary wiki syntax including Groovy, Python and Velocity script macros via the `newThemeName` request parameter (URL parameter), in combination with additional parameters. This has been patched in the supported versions 13.10.10, 14.9-rc-1, and 14.4.6. As a workaround, it is possible to edit `FlamingoThemesCode.WebHomeSheet` and manually perform the changes from the patch fixing the issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.748 (99.5th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.748 · newest: 0.748 · change: 0.000
Affected products
- Xwiki
- Xwiki Xwiki-Platform — versions >= 6.2.4, < 13.10.10, >= 14.0, < 14.4.6, >= 14.5, < 14.9-rc-1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/xwiki/xwiki-platform/security/advisories/GHSA-x2qm-r4wx-8gpg (Exploit, Vendor Advisory)
- github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2 (Patch)
- jira.xwiki.org/browse/XWIKI-19757 (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-26477?
- CVE-2023-26477 is a critical-severity vulnerability in Xwiki, classified under Eval Injection. CVSS score: 10.0/10. Published 2023-03-02.
- How severe is CVE-2023-26477?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2023-26477 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.