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CVE-2026-34046

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the `_read_flow` helper in `src/backend/base/langflow/api/v1/flows.py` branched on the `AUTO_LOGIN` setting to decide whether to filter by `user_id`. When `AUTO_LOGIN` was `False` (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 us
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1dee237a90d0f70dcc02ee7cfd2971bb84d3ee3400b9e574b73c035ed318d512
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"langflow-base","vendor":"langflow-ai","versions":[{"status":"affected","version":"< 0.5.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/affected/1

{"product":"langflow","vendor":"langflow-ai","versions":[{"status":"affected","version":"< 1.5.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

2 source assertions
{"product":"langflow-base","vendor":"langflow-ai","versions":[{"status":"affected","version":"< 0.5.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/affected/1
{"product":"langflow","vendor":"langflow-ai","versions":[{"status":"affected","version":"< 1.5.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/langflow-ai/langflow/pull/8956","tags":["x_refsource_MISC"],"url":"https://github.com/langflow-ai/langflow/pull/8956"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/references/1
{"name":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-8c4j-f57c-35cf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-8c4j-f57c-35cf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8ea6834f3339f43f899ad5d6223b38cfca3d3dee032dc087b20ef6578b4196bf · sha256:51fc670724bafa2a… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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