CVE-2026-34046
- Source
- https://cve.org/CVERecord?id=CVE-2026-34046
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34046.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34046
- Aliases
- Published
- 2026-03-27T20:06:35.836Z
- Modified
- 2026-07-15T02:19:21.598765965Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check
- Details
-
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the
_read_flowhelper insrc/backend/base/langflow/api/v1/flows.pybranched on theAUTO_LOGINsetting to decide whether to filter byuser_id. WhenAUTO_LOGINwasFalse(i.e., authentication was enabled), neither branch enforced an ownership check — the query returned any flow matching the given UUID regardless of who owned it. This allowed any authenticated user to read any other user's flow, including embedded plaintext API keys; modify the logic of another user's AI agents, and/or delete flows belonging to other users. The vulnerability was introduced by the conditional logic that was meant to accommodate public/example flows (those withuser_id = NULL) under auto-login mode, but inadvertently left the authenticated path without an ownership filter. The fix in version 1.5.1 removes theAUTO_LOGINconditional entirely and unconditionally scopes the query to the requesting user. - Database specific
{ "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34046.json", "cwe_ids": [ "CWE-639", "CWE-862" ] }- References
Affected packages
Git / github.com/langflow-ai/langflow
Affected ranges
- Type
- GIT
- Repo
- https://github.com/langflow-ai/langflow
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedLast affected
- Database specific
{ "cpe": [ "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*", "cpe:2.3:a:langflow:langflow:1.5.0:dev0:*:*:*:*:*:*", "cpe:2.3:a:langflow:langflow:1.5.0:dev1:*:*:*:*:*:*" ], "source": [ "CPE_RANGE", "CPE_STRING" ], "extracted_events": [ { "introduced": "0" }, { "fixed": "1.5.0" }, { "introduced": "1.5.0-dev0" }, { "last_affected": "1.5.0-dev0" }, { "introduced": "1.5.0-dev1" }, { "last_affected": "1.5.0-dev1" } ] }