{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-49468: LiteLLM: Authentication Bypass via Host Header Injection","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-49468","status":"final","version":"1","initial_release_date":"2026-06-22T20:37:14.494Z","current_release_date":"2026-06-22T20:37:14.494Z","revision_history":[{"date":"2026-06-22T20:37:14.494Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0,  This vulnerability is fixed in 1.84.0.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-49468 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-49468"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-49468"},{"category":"external","summary":"https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w","url":"https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w"},{"category":"external","summary":"https://github.com/BerriAI/litellm/releases/tag/v1.84.0","url":"https://github.com/BerriAI/litellm/releases/tag/v1.84.0"}]},"product_tree":{"branches":[{"category":"vendor","name":"BerriAI","branches":[{"category":"product_name","name":"litellm","branches":[{"category":"product_version","name":"< 1.84.0","product":{"name":"BerriAI litellm < 1.84.0","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:berriai:litellm:\\<_1.84.0:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-49468","title":"LiteLLM: Authentication Bypass via Host Header Injection","notes":[{"category":"description","text":"LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0,  This vulnerability is fixed in 1.84.0.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","baseScore":9.5,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}