What is CVE-2026-116822?

CVE-2026-116822 is a medium-severity vulnerability in Yeswiki, classified under External Control of File Name or Path. CVSS score: 5.3/10. Published 2026-10-27.

How severe is CVE-2026-116822?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Yeswiki

CVE-2026-116822

YesWiki before 4.7.0 contains a path traversal vulnerability in BazarListeAction that allows unauthenticated attackers to select arbitrary templates within the @bazar Twig namespace via the template GET parameter. Attackers can append crafted template values to pages containing the bazarliste action to force unintended layouts, causing page defacement for visitors following the crafted link.

Published 2026-10-27 · last modified 2026-10-27.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

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-73 — External Control of File Name or Path

References

github.com/YesWiki/yeswiki/security/advisories/GHSA-qfv2-x8g4-qg27 (vendor-advisory)
www.vulncheck.com/advisories/yeswiki-before-4.7.0-template-traversal-via-bazarl… (third-party-advisory)

Frequently asked questions

What is CVE-2026-116822?: CVE-2026-116822 is a medium-severity vulnerability in Yeswiki, classified under External Control of File Name or Path. CVSS score: 5.3/10. Published 2026-10-27.
How severe is CVE-2026-116822?: Medium severity. CVSS v3 base score is 5.3 out of 10.