Yeswiki Vulnerable to Authenticated Reflected Cross-site Scripting

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

3.8 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

EPSS

• CVE-2025-46350: 0.29% estimated exploitation activity in the next 30 days; percentile 21.77 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Vulnerable Version: Yeswiki < v4.5.4 Vulnerable Endpoint: /?PagePrincipale%2Fdeletepage Vulnerable Parameter: incomingurl Payload: "<scriptalert(1)</script Details Reflected Cross-Site Scripting (XSS) attacks are a type of injection, in which malicious scripts are injected into otherwise benign and trusted websites. XSS attacks occur when an attacker uses a web application to send malicious code, generally in the form of a browser-side script, to a different end user. Flaws that allow these attacks to succeed are quite widespread and occur anywhere a web application uses input from a user within the output it generates without validating or encoding it. PoC NOTE: This vulnerability requires admin access. 1. Visit the endpoint as mentioned below and see that an alert box pops up: URL with Payload: https://yeswiki.net/?PagePrincipale%2Fdeletepage&incomingurl="<scriptalert(1)</script Impact An attacker can use a reflected cross-site scripting attack to steal cookies from an…

Published by the source

29 Apr 2025, 14:37 UTC

Last modified by the source

29 Apr 2025, 20:27 UTC

Source last checked

26 Oct 2026, 14:33 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-cg4f-cq8h-3ch8

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# Patch Next advisory brief: CVE-2025-46350

Advisory: Yeswiki Vulnerable to Authenticated Reflected Cross-site Scripting
IDs: CVE-2025-46350, GHSA-cg4f-cq8h-3ch8
Record: https://patchnext.com/advisories/cve-2025-46350 (revision 1, source checked 26 Oct 2026, 14:33 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: yeswiki/yeswiki 4.5.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist yeswiki/yeswiki: affected < 4.5.4; fixed in 4.5.4

## Suggested inspection (read-only)
- Packagist yeswiki/yeswiki: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on yeswiki/yeswiki.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-cg4f-cq8h-3ch8 (GitHub-reviewed advisory GHSA-cg4f-cq8h-3ch8 lists affected ranges: Packagist yeswiki/yeswiki >=0 <4.5.4)

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