CVE-2026-33053Network attack vector

Cross-user API-key deletion via unchecked ownership

Published Mar 20, 2026 · Updated Mar 20, 2026

Authorization bypass in Langflow OSS before 1.9.0 allows remote authenticated users to delete other users' API keys by ID. The delete_api_key_route endpoint passes the path-supplied api_key_id to delete_api_key, which deletes the selected record without comparing its user_id with the current user's ID. A valid account and another key's UUID are required; deletion interrupts that user's API-dependent integrations.

CVSS severity7.1
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Langflow OSS before 1.9.0 allows remote authenticated users to delete other users' API keys by ID. The delete_api_key_route endpoint passes the path-supplied api_key_id to delete_api_key, which deletes the selected record without comparing its user_id with the current user's ID. A valid account and another key's UUID are required; deletion interrupts that user's API-dependent integrations.

The record

CVE
CVE-2026-33053
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-639, T1531
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=< 1.9.0

Published CVSS scores

7.1GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1531Account Access Removal

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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