CVE-2026-108741
LOW
2,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: passive
Confidentiality: N/A
Integrity: N/A
Availability: N/A
LOW
3,1
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none
Description
AI Translation Available
Shepherd (shepherd-ai) through 0.3.1 contains a server-side request forgery guard bypass in the citation-checker extra because the public_url guard validates a resolved address but fetch re-resolves the hostname at connect time. Attackers who plant a crafted reference URL in a checked document and control its DNS can rebind it to internal addresses, sending GET requests to internal HTTP(S) services and capturing responses in evidence files.
367
Time-of-check Time-of-use (TOCTOU) Race Condition
IncompleteCommon Consequences
Security Scopes Affected:
Integrity
Other
Non-Repudiation
Potential Impacts:
Alter Execution Logic
Unexpected State
Modify Application Data
Modify Files Or Directories
Modify Memory
Other
Hide Activities
Applicable Platforms
All platforms may be affected
https://github.com/shepherd-agents/shepherd
https://github.com/shepherd-agents/shepherd/blob/d34d5ca334871dfcb5a3dc76dd7804…
https://github.com/shepherd-agents/shepherd/blob/d34d5ca334871dfcb5a3dc76dd7804…
https://hackmd.io/@haind03/shepherd-citation-checker-dns-rebinding-ssrf
https://www.vulncheck.com/advisories/shepherd-through-0.3.1-ssrf-via-dns-rebind…