High severity · published Oct 2, 2026
CVE-2026-104472
YesWiki before 4.6.7 Missing Authorization via Attachment Download Handler
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
YesWiki before 4.6.7 contains a missing authorization vulnerability in the attachment download handler that allows unauthenticated attackers to bypass page read ACLs. Attackers can request the download handler with a known page tag and file parameter to retrieve confidential attachments from read-restricted pages.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YE
yeswiki · YesWiki
before 4.6.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104472
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104472
vendor-advisory
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7cj2-9pgf-vcw2
third-party-advisory
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-missing-authorization-via-attachment-download-handler
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