CVE Explorer

CVE-2026-55446

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.0.19, an attacker can send a /api/v1/files/upload/ request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time. This vulnerability is fixed in 1.0.19.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:86c01d185fae03dca39fbca5462a1979bdaa8db535880b870cb6d2d7459aec9d

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"langflow","vendor":"langflow-ai","versions":[{"status":"affected","version":"< 1.0.19"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d90dbcf161a454e342824c655493bb09b48bf585813f1f790b8c63d66a7579ce · sha256:66809893c51a637a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d90dbcf161a454e342824c655493bb09b48bf585813f1f790b8c63d66a7579ce · sha256:66809893c51a637a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d90dbcf161a454e342824c655493bb09b48bf585813f1f790b8c63d66a7579ce · sha256:66809893c51a637a… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/langflow-ai/langflow/pull/3923","tags":["x_refsource_MISC"],"url":"https://github.com/langflow-ai/langflow/pull/3923"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d90dbcf161a454e342824c655493bb09b48bf585813f1f790b8c63d66a7579ce · sha256:66809893c51a637a… · /containers/cna/references/1

{"name":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d90dbcf161a454e342824c655493bb09b48bf585813f1f790b8c63d66a7579ce · sha256:66809893c51a637a… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d90dbcf161a454e342824c655493bb09b48bf585813f1f790b8c63d66a7579ce · sha256:66809893c51a637a… · /containers/adp/0/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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