{"affected":[{"defaultStatus":"unaffected","product":"yeswiki","source":"CNA: VulnCheck","vendor":"YesWiki","versions":[{"lessThan":"4.7.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"4.7.0","versionType":"semver"}]}],"cveId":"CVE-2026-116823","cwes":["CWE-79"],"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.","epss":{"date":"2026-11-03","percentile":0.07497,"score":0.00179},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc"}],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":6.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"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","version":"4.0"},{"score":6.1,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1793726277400,"publishedAt":1793055949182,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-reflected-xss-via-bazarfield-request-fallback"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-reflected-xss-via-bazarfield-request-fallback"},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":[],"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc"}],"remediation":[],"revision":"84798acbd227596c9925e839147fc26d1ecc1e67be8974ec83df4d9186d66668","sources":[{"modifiedAt":1793725082902,"name":"CNA: VulnCheck","retrievedAt":1793725804136,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116823"},{"modifiedAt":1793726277400,"name":"NVD","retrievedAt":1793729858760,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116823"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793725833029,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-116823"}],"ssvc":{"assessedAt":1793725074314,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"YesWiki before 4.7.0 Reflected XSS via BazarField $_REQUEST Fallback","updatedAt":1793729858760}