{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-49956: Hermes WebUI < 0.51.269 Profile Isolation Bypass via sessions search","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-49956","status":"final","version":"1","initial_release_date":"2026-06-09T16:10:33.904Z","current_release_date":"2026-06-09T17:51:17.388Z","revision_history":[{"date":"2026-06-09T16:10:33.904Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Hermes WebUI before version 0.51.269 contains a profile isolation bypass vulnerability that allows authenticated users to access data belonging to other profiles by querying the session search endpoint without active-profile filtering. Attackers can send requests to the sessions search handler to retrieve session titles and transcript message content from profiles other than their own active profile.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-49956 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-49956"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-49956"},{"category":"external","summary":"github.com","url":"https://github.com/nesquena/hermes-webui/releases/tag/v0.51.269"},{"category":"external","summary":"github.com","url":"https://github.com/nesquena/hermes-webui/pull/3646"},{"category":"external","summary":"github.com","url":"https://github.com/nesquena/hermes-webui/pull/3672"},{"category":"external","summary":"github.com","url":"https://github.com/nesquena/hermes-webui/commit/2c7b530071bb29ae4184e83e33be5799d529568e"},{"category":"external","summary":"vulncheck.com","url":"https://www.vulncheck.com/advisories/hermes-webui-profile-isolation-bypass-via-sessions-search"}]},"product_tree":{"branches":[{"category":"vendor","name":"nesquena","branches":[{"category":"product_name","name":"hermes-webui","branches":[{"category":"product_version_range","name":"<0.51.269","product":{"name":"nesquena hermes-webui <0.51.269","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:nesquena:hermes-webui:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-49956","title":"Hermes WebUI < 0.51.269 Profile Isolation Bypass via sessions search","notes":[{"category":"description","text":"Hermes WebUI before version 0.51.269 contains a profile isolation bypass vulnerability that allows authenticated users to access data belonging to other profiles by querying the session search endpoint without active-profile filtering. Attackers can send requests to the sessions search handler to retrieve session titles and transcript message content from profiles other than their own active profile.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","baseScore":7.1,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 0.51.269.","product_ids":["CSAFPID-1"],"url":"https://github.com/nesquena/hermes-webui/commit/2c7b530071bb29ae4184e83e33be5799d529568e"}]}]}