CVE-2026-116823 Details
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.
A reflected cross-site scripting vulnerability has been identified in YesWiki versions prior to 4.7.0. This vulnerability allows unauthenticated attackers to inject JavaScript by sending query parameters that correspond to missing Bazar field names. When a Bazar entry lacks a specific field key, the BazarField::getValue() method defaults to unsanitized values from the $_REQUEST superglobal. These values are then rendered through Twig templates with the |raw filter, bypassing automatic escaping. As a result, attackers can execute JavaScript in the context of the victim's session, performing authenticated actions on the same origin.
Users can update to YesWiki version 4.7.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 27, 2026CISA-ADP
Assessed Nov 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc | CISA-ADP | AdvisoryExploitTechnical AnalysisVendor |
| https://github.com/YesWiki/yeswiki/security/advisories/GHSA-hcvp-q8fx-84mc | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-reflected-xss-via-bazarfield-request-fallback | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| YesWiki | <= 4.6.7 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 3, 2026 | CVE Modified | CISA-ADP |
| Oct 27, 2026 | New CVE Received | [email protected] |