{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-108741","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-11T01:52:55.363Z","datePublished":"2026-10-11T12:19:45.494Z","dateUpdated":"2026-10-13T17:00:35.001Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-11T12:19:45.494Z"},"datePublic":"2026-10-10T00:00:00.000Z","title":"Shepherd through 0.3.1 SSRF via DNS Rebinding in Citation Checker","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Time-of-check Time-of-use (TOCTOU) Race Condition","cweId":"CWE-367","type":"CWE"}]}],"affected":[{"vendor":"shepherd-agents","product":"Shepherd","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"0.3.1","status":"affected","versionType":"semver"}],"packageURL":"pkg:pypi/shepherd-ai","collectionURL":"https://pypi.org","repo":"https://github.com/shepherd-agents/shepherd"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2.3,"baseSeverity":"LOW"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW"}}],"references":[{"url":"https://hackmd.io/@haind03/shepherd-citation-checker-dns-rebinding-ssrf","tags":["third-party-advisory"]},{"url":"https://github.com/shepherd-agents/shepherd/blob/d34d5ca334871dfcb5a3dc76dd78045829fa4e56/shepherd/extras/citation-checker/src/shepherd_citation_checker/_engine/network.py#L9-L17","tags":["technical-description"]},{"url":"https://github.com/shepherd-agents/shepherd/blob/d34d5ca334871dfcb5a3dc76dd78045829fa4e56/shepherd/extras/citation-checker/src/shepherd_citation_checker/_engine/fetch.py#L34-L55","tags":["technical-description"]},{"url":"https://github.com/shepherd-agents/shepherd","tags":["product"]},{"name":"VulnCheck Advisory: Shepherd through 0.3.1 SSRF via DNS Rebinding in Citation Checker","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/shepherd-through-0.3.1-ssrf-via-dns-rebinding-in-citation-checker"}],"credits":[{"lang":"en","value":"HaiND from the Post and Telecommunication Institute of Technology","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T15:49:34.302287Z","id":"CVE-2026-108741","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-13T17:00:35.001Z"}}]}}