CVE-2026-104449CWE-639

CVE-2026-104449

Medium · published October 2, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
19.0
In the wild
Unconfirmed
What it is

YesWiki before 4.6.7 contains an access control vulnerability allowing unauthenticated attackers to overwrite any existing wiki page, including pages whose write ACL restricts editing, via the Bazar entry-creation flow. Attackers can submit a crafted entry with an attacker-controlled id_fiche matching an existing page, overwriting its body for mass defacement and content destruction.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
CVSS v4.0
8.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00277 · 19.0th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-02T16:17Z
References (3)
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-4388-phmh-jrw8 · [email protected]https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-page-overwrite-via-bazar-id-fiche · [email protected]https://github.com/YesWiki/yeswiki/security/advisories/GHSA-4388-phmh-jrw8 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 04 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 02 OCT 11:38Z
    YesWiki before 4.6.7 Unauthenticated Page Overwrite via Bazar id_fiche
    cvelistv5