{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-56322: Capgo - Information Disclosure via Unauthenticated /updates defaultChannel Parameter","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-56322","status":"final","version":"1","initial_release_date":"2026-06-23T12:13:03.409Z","current_release_date":"2026-06-23T15:05:01.767Z","revision_history":[{"date":"2026-06-23T12:13:03.409Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Capgo before 12.128.2 contains an information disclosure vulnerability in the unauthenticated /updates endpoint that resolves the defaultChannel parameter before enforcing privacy restrictions, allowing attackers to enumerate private channels and leak version/config state. Unauthenticated attackers can probe private channel names and distinguish valid channels from nonexistent ones based on response differences, revealing assigned bundle versions and platform-specific configuration details.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-56322 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-56322"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-56322"},{"category":"external","summary":"GitHub Security Advisory (GHSA-pgmr-gw53-7f77)","url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-pgmr-gw53-7f77"},{"category":"external","summary":"VulnCheck Advisory: Capgo - Information Disclosure via Unauthenticated /updates defaultChannel Parameter","url":"https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-updates-defaultchannel-parameter"}]},"product_tree":{"branches":[{"category":"vendor","name":"Capgo","branches":[{"category":"product_name","name":"Capgo","branches":[{"category":"product_version_range","name":"<12.128.2","product":{"name":"Capgo Capgo <12.128.2","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:capgo:capgo:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"12.128.2","product":{"name":"Capgo Capgo 12.128.2","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:capgo:capgo:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-56322","title":"Capgo - Information Disclosure via Unauthenticated /updates defaultChannel Parameter","notes":[{"category":"description","text":"Capgo before 12.128.2 contains an information disclosure vulnerability in the unauthenticated /updates endpoint that resolves the defaultChannel parameter before enforcing privacy restrictions, allowing attackers to enumerate private channels and leak version/config state. Unauthenticated attackers can probe private channel names and distinguish valid channels from nonexistent ones based on response differences, revealing assigned bundle versions and platform-specific configuration details.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"],"fixed":["CSAFPID-2"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 12.128.2.","product_ids":["CSAFPID-1"]}]}]}