CVE-2026-116823
YesWiki before 4.7.0 Reflected XSS via BazarField $_REQUEST Fallback
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| yeswiki YesWiki |
≥ 0; < 4.7.0 (affected, semver) 4.7.0 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 5.3 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | CNA: VulnCheck |
| 3.1 / 6.1 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | CNA: VulnCheck |
| 4.0 / 5.3 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 6.1 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc
exploit · ADP: CISA-ADP
References
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mcCNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-reflected-xss-via-bazarfield-request-fallbackCNA: VulnCheck · third-party-advisory
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mcADP: CISA-ADP · exploit
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc[email protected]
- https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-reflected-xss-via-bazarfield-request-fallback[email protected]
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc134c704f-9b21-4f2e-91b3-4a467353bcc0
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