CVE-2023-29516
HighPublic exploitXWiki Platform vulnerable to privilege escalation from view right on XWiki.AttachmentSelector
Published Apr 20, 2023 · Updated Sep 10, 2026 · Also known as GHSA-3989-4c6x-725f
Key Facts
Patch immediately- CVE-2023-29516 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Xwiki, org.xwiki.platform:xwiki-platform-attachment-ui (maven), xwiki-platform.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 66% probability of exploitation in the next 30 days.
- Fixed versions are available, including org.xwiki.platform:xwiki-platform-attachment-ui 13.10.11, org.xwiki.platform:xwiki-platform-attachment-ui 14.10.1, org.xwiki.platform:xwiki-platform-attachment-ui 14.4.8.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
66%
Higher than 99.2% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-29516 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with view rights on XWiki.AttachmentSelector can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping in the "Cancel and return to page" button. This page is installed by default. This vulnerability has been patched in XWiki 15.0-rc-1, 14.10.1, 14.4.8, and 13.10.11. There are no known workarounds for this vulnerability.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| XwikiXwiki | See advisory | 13.10.11 |
| org.xwiki.platform:xwiki-platform-attachment-uimaven | >= 2.0-rc-2 | 13.10.11 |
| xwiki-platform | >= < 13.10.11 | n/a |
Patched Releases
org.xwiki.platform:xwiki-platform-attachment-ui
13.10.11, 14.10.1, 14.4.8
Xwiki
13.10.11
Timeline
Publicly disclosed
Apr 20, 2023
Last updated
Sep 10, 2026
Weakness Type
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
References
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29516.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-29516
- articlehttps://github.com/xwiki/xwiki-platform/commit/aca1d677c58563bbe6e35c9e1c29fd8b12ebb996
- articlehttps://github.com/xwiki/xwiki-platform/security/advisories/GHSA-3989-4c6x-725f
FAQ
Common Questions.
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it.
Affected: Xwiki; org.xwiki.platform:xwiki-platform-attachment-ui (maven) versions >= 2.0-rc-2; xwiki-platform versions >= < 13.10.11. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including org.xwiki.platform:xwiki-platform-attachment-ui 13.10.11, org.xwiki.platform:xwiki-platform-attachment-ui 14.10.1, org.xwiki.platform:xwiki-platform-attachment-ui 14.4.8.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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