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CVE-2026-33017

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data parameter is supplied, the endpoint uses attacker-controlled flow data (containing arbitrary Python code in node definitions) instead of the stored flow data from the database. This code is passed to exec() with zero sandboxing, resulting in unauthe
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d630acf326fd68fc15c626cbbd2bb7131ba3f9193732825845860b3d62476a98
Known exploited
CISA KEV
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-95","description":"CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"langflow","vendor":"langflow-ai","versions":[{"status":"affected","version":"< 1.9.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-95","description":"CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/problemTypes/1/descriptions/0

Known exploitation assertions

2 source assertions
{"cwes":["CWE-94","CWE-95","CWE-306"],"dateAdded":"2026-03-25","dueDate":"2026-04-08","knownRansomwareCampaignUse":"Unknown","notes":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx ; https://nvd.nist.gov/vuln/detail/CVE-2026-33017","product":"Langflow","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","shortDescription":"Langflow contains a code injection vulnerability that could allow building public flows without requiring aut…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:2fdcf3573d9ba97fac351a6362deb79f436cb493d425285b9d5eac650e22850e · sha256:16acee8334e59e44… · /vulnerabilities/105
    Open source location →
{"cwes":["CWE-94","CWE-95","CWE-306"],"dateAdded":"2026-03-25","dueDate":"2026-04-08","knownRansomwareCampaignUse":"Unknown","notes":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx ; https://nvd.nist.gov/vuln/detail/CVE-2026-33017","product":"Langflow","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","shortDescription":"Langflow contains a code injection vulnerability that could allow building public flows without requiring aut…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:cf903346fdd7362fcf7615b94b3df608b2d18e07284e205be672bdeb9e69d0a4 · sha256:635dff916c4092c0… · /vulnerabilities/108
    Open source location →

Source references

7 source assertions
{"name":"https://github.com/advisories/GHSA-rvqx-wpfh-mfx7","tags":["x_refsource_MISC"],"url":"https://github.com/advisories/GHSA-rvqx-wpfh-mfx7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/references/2
{"name":"https://github.com/langflow-ai/langflow/commit/73b6612e3ef25fdae0a752d75b0fabd47328d4f0","tags":["x_refsource_MISC"],"url":"https://github.com/langflow-ai/langflow/commit/73b6612e3ef25fdae0a752d75b0fabd47328d4f0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/langflow-ai/langflow/releases/tag/1.8.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/adp/0/references/3
{"name":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://medium.com/@aviral23/cve-2026-33017-how-i-found-an-unauthenticated-rce-in-langflow-by-reading-the-code-they-already-dc96cdce5896"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/adp/0/references/1
{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33017"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/adp/0/references/2
{"tags":["third-party-advisory"],"url":"https://www.sysdig.com/blog/cve-2026-33017-how-attackers-compromised-langflow-ai-pipelines-in-20-hours"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:531adda343ebd4f6001e4cd4c23ee52ce6c0141cad9a7db2a0f3eed1f17d1f44 · sha256:8c97ee26a99ee6a5… · /containers/adp/0/references/0

Attribution and limitations

  • CISA Known Exploited Vulnerabilities JSON: CISA named for provenance; do not use CISA/DHS marks or imply endorsement Source →
  • 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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