Medium severity · published Apr 2, 2026
CVE-2026-34598
YesWiki has Persistant Blind XSS at "/?BazaR&vue=consulter"
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
YesWiki is a wiki system written in PHP. Prior to version 4.6.0, a stored and blind XSS vulnerability exists in the form title field. A malicious attacker can inject JavaScript without any authentication via a form title that is saved in the backend database. When any user visits that injected page, the JavaScript payload gets executed. This issue has been patched in version 4.6.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YE
yeswiki · YesWiki
< 4.6.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34598
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34598
Product
https://github.com/YesWiki/yeswiki/releases/tag/v4.6.0
Exploit
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-37fq-47qj-6j5j
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