{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-49869: Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-49869","status":"final","version":"1","initial_release_date":"2026-06-26T20:58:19.576Z","current_release_date":"2026-06-26T20:58:19.576Z","revision_history":[{"date":"2026-06-26T20:58:19.576Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses request.getPath().endsWith(\"/configs\") to whitelist the public configuration endpoint from Basic Auth. Because the check is a suffix match rather than an exact path match, any API path whose last segment is configs bypasses authentication entirely. An unauthenticated remote attacker can exploit this to create and execute arbitrary workflows without credentials. Because Kestra ships with script execution plugins (plugin-script-shell, plugin-script-python, etc.) enabled by default, this directly results in unauthenticated Remote Code Execution as root inside the Kestra worker container.  This vulnerability is fixed in 1.0.45 and 1.3.21.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-49869 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-49869"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-49869"},{"category":"external","summary":"https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx","url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx"}]},"product_tree":{"branches":[{"category":"vendor","name":"kestra-io","branches":[{"category":"product_name","name":"kestra","branches":[{"category":"product_version","name":"< 1.0.45","product":{"name":"kestra-io kestra < 1.0.45","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:kestra-io:kestra:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 1.1.0, < 1.3.21","product":{"name":"kestra-io kestra >= 1.1.0, < 1.3.21","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:kestra-io:kestra:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-49869","title":"Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`","notes":[{"category":"description","text":"Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses request.getPath().endsWith(\"/configs\") to whitelist the public configuration endpoint from Basic Auth. Because the check is a suffix match rather than an exact path match, any API path whose last segment is configs bypasses authentication entirely. An unauthenticated remote attacker can exploit this to create and execute arbitrary workflows without credentials. Because Kestra ships with script execution plugins (plugin-script-shell, plugin-script-python, etc.) enabled by default, this directly results in unauthenticated Remote Code Execution as root inside the Kestra worker container.  This vulnerability is fixed in 1.0.45 and 1.3.21.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":10,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2"]}]}]}