Medium severity · published Oct 26, 2026
CVE-2026-116823
YesWiki before 4.7.0 Reflected XSS via BazarField $_REQUEST Fallback
New
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
YesWiki before 4.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject JavaScript by supplying query parameters matching missing Bazar field names. Attackers can craft links where BazarField::getValue() falls back to unsanitized $_REQUEST values rendered via Twig |raw templates, performing same-origin authenticated actions in victims' sessions.
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 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YE
yeswiki · YesWiki
before 4.7.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116823
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116823
github.com
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc
www.vulncheck.com
https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-reflected-xss-via-bazarfield-request-fallback
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