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CRITICAL severity

CVE-2023-29526 — xwiki-platform-oldcore

CRITICAL

CVE-2023-29526 is a critical-severity (CVSS 9.9) CWE-74 vulnerability in org.xwiki.platform:xwiki-platform-oldcore. 3 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for org.xwiki.platform:xwiki-platform-oldcore — see the affected versions and patch details below.

Async and display macro allow displaying and interacting with any document in restricted mode

Also known asGHSA-gpq5-7p34-vqx5
Published
Updated
Affected
6 pkgs
Patched
6 / 6
Exploits
3 known
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-29526.

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs67th percentile — riskier than 67% of all scored CVEsHighest risk
0.00%9.64%19.3%28.9%22.5%1.1%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

6 pkgs affected
☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-rendering-async-macro☕org.xwiki.platform:xwiki-platform-rendering-async-macro☕org.xwiki.platform:xwiki-platform-rendering-async-macro

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Impact

It's possible to display any page you cannot access through the combination of the async and display macro.

Steps to reproduce:

  1. Enable comments for guests by giving guests comment rights
  2. As a guest, create a comment with content {{async}}{{display reference="Menu.WebHome" /}}{{/async}}
  3. Open the comments viewer from the menu (appends ?viewer=comments to the URL)

-> the Menu.WebHome is displayed while the expectation would be to have an error that the current user is not allowed to see it

Patches

The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.3, 14.4.8, and 13.10.11.

Workarounds

There is no known workaround.

References

https://jira.xwiki.org/browse/XWIKI-20394 https://jira.xwiki.org/browse/XRENDERING-694

For more information

If you have any questions or comments about this advisory:

Affected Packages

6 total 6 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 10.11.1&&< 13.10.1113.10.11org.xwiki.platform:xwiki-platform-oldcore:13.10.11
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 14.0-rc-1&&< 14.4.814.4.8org.xwiki.platform:xwiki-platform-oldcore:14.4.8
☕Mavenorg.xwiki.platform:xwiki-platform-oldcore≥ 14.5&&< 14.10.314.10.3org.xwiki.platform:xwiki-platform-oldcore:14.10.3
☕Mavenorg.xwiki.platform:xwiki-platform-rendering-async-macro≥ 10.11.1&&< 13.10.1113.10.11org.xwiki.platform:xwiki-platform-rendering-async-macro:13.10.11
☕Mavenorg.xwiki.platform:xwiki-platform-rendering-async-macro≥ 14.0-rc-1&&< 14.4.814.4.8org.xwiki.platform:xwiki-platform-rendering-async-macro:14.4.8
☕Mavenorg.xwiki.platform:xwiki-platform-rendering-async-macro≥ 14.5&&< 14.10.314.10.3org.xwiki.platform:xwiki-platform-rendering-async-macro:14.10.3

Affected Products

1 product · 3 configurations
Application
xwikixwiki
≥ 14.5 && < 14.10.3
range
Exploits & PoCs
3

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

XWiki Platform is a generic wiki platform offering runtime services for …

jira.xwiki.orgNVDApr 2023

Report on jira.xwiki.org

jira.xwiki.orgNVDApr 2023

Report on github.com

github.comNVDApr 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-oldcore, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.xwiki.platform:xwiki-platform-oldcore to 13.10.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-29526 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact It's possible to display any page you cannot access through the combination of the async and display macro. Steps to reproduce: 1. Enable comments for guests by giving guests comment rights 2. As a guest, create a comment with content ```{{async}}{{display reference="Menu.WebHome" /}}{{/async}}``` 3. Open the comments viewer from the menu (appends ?viewer=comments to the URL) -> the `Menu.WebHome` is displayed while the expectation would be to have an error that the current user is not allowed to see it ### Patches The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.
O3 Security · Impact-Aware SCA

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CVE-2023-29526: xwiki-platform-oldcore — Fixed in 13.10.11