CVE-2026-34598: high-severity vulnerability in yeswiki
YesWiki has Persistant Blind XSS at "/?BazaR&vue=consulter"
Published
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
exploitation probability
0.3%top 78% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
YesWiki · yeswikiRelated CVEs — yeswiki
In the same product, most dangerous first.
CVE-2025-31131HIGHPath Traversal allowing arbitrary read of files in YeswikiEPSS 5.5%CVE-2026-46670CRITICALYesWiki: Unauthenticated SQL InjectionEPSS 2.0%CVE-2025-46347MEDIUMYesWiki Remote Code Execution via Arbitrary PHP File Write and ExecutionEPSS 1.0%CVE-2026-52778CRITICALYesWiki has Unsafe eval() in Formula Calculator - Remote Code Execution (RCE) & Denial of Service (DoS)EPSS 0.8%CVE-2026-52762HIGHYesWiki: Authenticated (Admin) Server-Side Template Injection to Remote Code Execution via Bazar Semantic TemplatesEPSS 0.8%CVE-2026-52774MEDIUMReflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes in YesWikiEPSS 0.7%