What is CVE-2026-104470?

CVE-2026-104470 is a high-severity vulnerability in Yeswiki, classified under Cross-site Scripting. CVSS score: 7.4/10. Published 2026-10-02.

How severe is CVE-2026-104470?

High severity. CVSS v3 base score is 7.4 out of 10.

XSS in Yeswiki

CVE-2026-104470

YesWiki before 4.6.7 contains a server-side request forgery vulnerability in the Bazar valeur action that allows page editors to make the server fetch arbitrary URLs. Attackers can supply loopback or internal URLs in the url parameter to probe internal services and inject unescaped remote HTML that executes scripts in viewers' browsers.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-02 · last modified 2026-10-02.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Yeswiki

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

GitHub Security Advisory (GHSA-6rvf-7pwm-6j44) (vendor-advisory)
VulnCheck Advisory: YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action (third-party-advisory)

Frequently asked questions

What is CVE-2026-104470?: CVE-2026-104470 is a high-severity vulnerability in Yeswiki, classified under Cross-site Scripting. CVSS score: 7.4/10. Published 2026-10-02.
How severe is CVE-2026-104470?: High severity. CVSS v3 base score is 7.4 out of 10.