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CVE-2025-49587 — xwiki-platform-notificati…

Fix: xwiki/xwiki-platform@55c5d56

CVE-2025-49587 is a CWE-357 vulnerability in org.xwiki.platform:xwiki-platform-notifications-notifiers-default. A fix is available for org.xwiki.platform:xwiki-platform-notifications-notifiers-default — see the affected versions and patch details below.

XWiki does not require right warnings for notification displayer objects

Also known asGHSA-j7p2-87q3-44w7
Published
Jun 13, 2025
Updated
Aug 12, 2026
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Sep 22, 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-2025-49587.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs37th percentile — riskier than 37% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

3 pkgs affected
☕org.xwiki.platform:xwiki-platform-notifications-notifiers-default☕org.xwiki.platform:xwiki-platform-notifications-notifiers-default☕org.xwiki.platform:xwiki-platform-notifications-notifiers-default

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

When a user without script right creates a document with an XWiki.Notifications.Code.NotificationDisplayerClass object, and later an admin edits and saves that document, the possibly malicious content of that object is output as raw HTML, allowing XSS attacks. While the notification displayer executes Velocity, the existing generic analyzer already warns admins before editing Velocity code. Note that warnings before editing documents with dangerous properties have only been introduced in XWiki 15.9, before that version, this was a known issue and the advice was simply to be careful.

Patches

This vulnerability has been patched in XWiki 15.10.16, 16.4.7, and 16.10.2 by adding a required rights analyzer that warns the admin before editing about the possibly malicious code.

Workarounds

We're not aware of any real workarounds apart from just being careful with editing documents previously edited by untrusted users as a user with script, admin or programming right.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.xwiki.platform:xwiki-platform-notifications-notifiers-default≥ 15.9-rc-1&&< 15.10.1615.10.16org.xwiki.platform:xwiki-platform-notifications-notifiers-default:15.10.16
☕Mavenorg.xwiki.platform:xwiki-platform-notifications-notifiers-default≥ 16.0.0-rc-1&&< 16.4.716.4.7org.xwiki.platform:xwiki-platform-notifications-notifiers-default:16.4.7
☕Mavenorg.xwiki.platform:xwiki-platform-notifications-notifiers-default≥ 16.5.0-rc-1&&< 16.10.216.10.2org.xwiki.platform:xwiki-platform-notifications-notifiers-default:16.10.2

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-notifications-notifiers-default, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.xwiki.platform:xwiki-platform-notifications-notifiers-default to 15.10.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-49587 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.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-49587 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2025-49587. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact When a user without script right creates a document with an `XWiki.Notifications.Code.NotificationDisplayerClass` object, and later an admin edits and saves that document, the possibly malicious content of that object is output as raw HTML, allowing XSS attacks. While the notification displayer executes Velocity, the existing generic analyzer already warns admins before editing Velocity code. Note that warnings before editing documents with dangerous properties have only been introduced in XWiki 15.9, before that version, this was a known issue and the advice was simply to be carefu
O3 Security · Impact-Aware SCA

Is CVE-2025-49587 in your dependencies?

O3 Security finds CVE-2025-49587 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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CVE-2025-49587: xwiki-platform-notificati… | O3 Security