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Low

Yeswiki Vulnerable to Authenticated Reflected Cross-site Scripting

  • Disclosed: 29.04.2025
  • Updated: 11.10.2026 10:22

Summary

Vulnerable Version: Yeswiki < v4.5.4 Vulnerable Endpoint: /?PagePrincipale%2Fdeletepage Vulnerable Parameter: incomingurl Payload: "><script>alert(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="><script>alert(1)</script>

Impact

An attacker can use a reflected cross-site scripting attack to steal cookies from an authenticated user by having them click on a malicious link. Stolen cookies allow the attacker to take over the user’s session. This vulnerability may also allow attackers to deface the website or embed malicious content.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package yeswiki/yeswiki < 4.5.4 4.5.4

References

CVSS score 3.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
Composer
Package
yeswiki/yeswiki
Disclosed
29.04.2025
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-cg4f-cq8h-3ch8 - CC BY 4.0

Vulnerability history: yeswiki/yeswiki

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (31) in the archive
Total entries
31
First → latest
03.2022 07.2026
Without a fix
2
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 16
  • Medium 8
  • Low 2

Disclosures per year

Severity:
  1. YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service
    Critical · 9.8 CVE-2026-52778 < 4.6.6 4.6.6
  2. YesWiki Vulnerable to Authenticated PHP Object Injection in BazarImportAction via unserialize
    Critical CVE-2026-52777 < 4.6.6 4.6.6
  3. YesWiki has Authenticated SQL Injection via ReactionManager
    High · 8.8 CVE-2026-52775 < 4.6.6 4.6.6
  4. YesWiki: Second-Order SQL Injection in Page Delete API via Unescaped Page Tag (`ApiController::deletePage`)
    High · 8.3 CVE-2026-52771 >= 4.2.0, < 4.6.6 4.6.6
  5. YesWiki: SQL Injection possible through public Bazar entry-listing APIs via numeric `query`/`queries` filters
    High · 7.5 CVE-2026-52770 < 4.6.6 4.6.6
  6. YesWiki has Unauthenticated Server-Side Request Forgery via ActivityPub `Signature.keyId`
    High · 8.3 CVE-2026-52769 >= 4.6.2, < 4.6.6 4.6.6
  7. YesWiki Vulnerable to Unauthenticated ActivityPub Signature-Verification Bypass via `!openssl_verify(...)` accepting `int(-1)`
    High · 8.2 CVE-2026-52767 >= 4.6.2, < 4.6.6 4.6.6
  8. YesWiki vulnerable to unauthenticated arbitrary page deletion via `{{erasespamedcomments}}` action
    Critical · 9.1 CVE-2026-52766 < 4.6.6 4.6.6
  9. YesWiki: Authenticated (Admin) Server-Side Template Injection to Remote Code Execution via Bazar Semantic Templates
    High CVE-2026-52762 < 4.6.6 4.6.6
  10. YesWiki: Unauthenticated SQL Injection
    Critical · 9.8 CVE-2026-46670 < 4.6.4 4.6.4
  11. YesWiki vulnerable to authenticated SQL Injection via id_fiche in EntryManager::formatDataBeforeSave()
    High · 8.8 CVE-2026-41143 < 4.6.1 4.6.1
  12. YesWiki has Persistent Blind XSS at "/?BazaR&vue=consulter"
    High CVE-2026-34598 < 4.6.0 4.6.0
  13. YesWiki Remote Code Execution via Arbitrary PHP File Write and Execution
    High CVE-2025-46347 < 4.5.4 4.5.4
  14. YesWiki Vulnerable to Unauthenticated Site Backup Creation and Download
    Critical · 10.0 CVE-2025-46348 < 4.5.4 4.5.4
  15. YesWiki Vulnerable to Unauthenticated Reflected Cross-site Scripting
    High · 7.6 CVE-2025-46349 <= 4.5.3 no fix
  16. Yeswiki Vulnerable to Authenticated Reflected Cross-site Scripting this entry
    Low · 3.8 CVE-2025-46350 < 4.5.4 4.5.4
  17. Yeswiki Path Traversal vulnerability allows arbitrary read of files
    High · 8.6 CVE-2025-31131 < 4.5.2 4.5.2
  18. Authenticated arbitrary file deletion in YesWiki
    High · 7.1 CVE-2025-24019 < 4.5.0 4.5.0
  19. Authenticated Stored XSS in YesWiki
    High · 7.6 CVE-2025-24018 < 4.5.0 4.5.0
  20. Unauthenticated DOM Based XSS in YesWiki
    High · 7.6 CVE-2025-24017 < 4.5.0 4.5.0
Show more (2) Showing 20 of 22

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