CVE-2026-104445
YesWiki before 4.6.7 Authentication Bypass via ActivityPub Inbox Actor Spoofing
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
YesWiki before 4.6.7 contains an authentication bypass vulnerability in the ActivityPub inbox that fails to bind the verified HTTP signature signer to the activity actor. Unauthenticated attackers with any ActivityPub keypair can send signed Delete or Update activities referencing a mirrored entry's sourceUrl to delete or overwrite other actors' federated entries.
| CWE | CWE-290 |
| Vendor | yeswiki |
| Product | yeswiki |
| Published | Oct 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
YesWiki / yeswiki
0 < 4.6.7
References
Credits
🔍 arpitjain099