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GHSA-5724-x3rh-5qqq yeswiki/yeswiki

GHSA-5724-x3rh-5qqq is a remote code execution vulnerability in yeswiki/yeswiki. A fix is available for yeswiki/yeswiki — see the affected versions and patch details below.

YesWiki has Multiple Reflected Cross-site Scripting Vulnerabilities

Published
Apr 1, 2026
Updated
Apr 1, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Apr 1, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐘yeswiki/yeswiki

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

Description

Summary

Multiple reflected Cross-site Scripting (XSS) vulnerabilities across both authenticated and unauthenticated portions of the application. These findings present a significant security risk, as they can be leveraged to execute arbitrary JavaScript in a victim’s browser under various contexts.

Impact and Exploitation

While XSS is often treated as a standalone issue, these vulnerabilities have broader implications. Specifically, they can be used as launch points to exploit other significant vulnerabilities.

Proof of concept links follow. All testing was performed on my local docker setup running the lastest version of the application.

Proof of Concepts

Authenticated Reflected XSS

http://localhost:8085/?ElizabethJFeinler/deletepage&incomingurl=%22%3E%3Cscript%3Ealert(1)%3C%2fscript%3E
http://localhost:8085/?BazaR&vue=saisir&action=saisir_fiche&id=%3Cscript%3Ealert(1)%3C%2fscript%3E
http://localhost:8085/?GererThemes/upload&file=%3Cscript%3Ealert(1)%3C/script%3E

Unauthenticated Reflected XSS

http://localhost:8085/?PagePrincipale/listpages&tags=%22%3E%3Cscript%3Ealert(1)%3C/script%3E

In this one, most of the parameters can be used to deliver an XSS payload, not just the template parameter.

http://localhost:8085/?BazaR/bazariframe&id=2&template=<script>alert(1)</script>&width=100%25&height=600px&lat=46.22763&lon=2.213749&markersize=big&provider=MapBox&zoom=5&groups=&titles=&groupsexpanded=false

Impact

The reflected XSS vulnerabilities identified pose a significant risk to both application integrity and user safety. When combined with other issues discovered such as insecure endpoints or improper authentication mechanisms. These XSS flaws can be leveraged to escalate access, hijack sessions, and in some cases, achieve remote code execution (RCE). For example, malicious JavaScript executed via XSS could be used to trigger authenticated requests that exploit backend vulnerabilities, ultimately allowing an attacker to execute arbitrary commands on the server or pivot deeper into the environment.

Mitigation

Update to version 4.6.0

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistyeswiki/yeswikiall versions4.6.0composer require yeswiki/yeswiki:^4.6.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Fix

    Update yeswiki/yeswiki to 4.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5724-x3rh-5qqq 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 GHSA-5724-x3rh-5qqq can be triaged on real exposure rather than presence alone.

Tailored to GHSA-5724-x3rh-5qqq. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary Multiple **reflected Cross-site Scripting (XSS)** vulnerabilities across both **authenticated and unauthenticated** portions of the application. These findings present a significant security risk, as they can be leveraged to execute arbitrary JavaScript in a victim’s browser under various contexts. ## Impact and Exploitation While XSS is often treated as a standalone issue, these vulnerabilities have broader implications. Specifically, they can be used as **launch points to exploit other significant vulnerabilities**. Proof of concept links follow. All testing was performed on
O3 Security · Impact-Aware SCA

Is GHSA-5724-x3rh-5qqq in your dependencies?

O3 Security finds GHSA-5724-x3rh-5qqq across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-5724-x3rh-5qqq: yeswiki/yeswiki RCE | O3 Security