What is CVE-2026-104440?

CVE-2026-104440 is a medium-severity vulnerability in Yeswiki, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-10-02.

How severe is CVE-2026-104440?

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

SSRF in Yeswiki

CVE-2026-104440

YesWiki before 4.6.7 contains a blind server-side request forgery vulnerability that allows unauthenticated attackers to make arbitrary server-side requests via the idtypeannonce parameter of /api/entries/bazarlist. Because isValidURL() always returns true, attackers can supply internal URLs fetched by curl in loadURLContent() to probe internal networks and reach internal services or metadata endpoints.

Vulnerability class: SSRF (Server-Side Request Forgery)

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

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-918 — Server-Side Request Forgery (SSRF)

References

github.com/YesWiki/yeswiki/security/advisories/GHSA-gw65-cpc7-hww6 (vendor-advisory)
www.vulncheck.com/advisories/yeswiki-before-4.6.7-blind-ssrf-via-bazarlist-api-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-104440?: CVE-2026-104440 is a medium-severity vulnerability in Yeswiki, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-10-02.
How severe is CVE-2026-104440?: Medium severity. CVSS v3 base score is 5.3 out of 10.