HighVulnerability

CVE-2026-12945: IBM Langflow OSS improper access control on build job logs and endpoints

Source: NVD(opens in a new tab)
Identifier: CVE-2026-12945
Published: July 30, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-12945 affects IBM Langflow OSS 1.0.0 through 1.10.1. Authenticated users can access and manipulate other users' build jobs because of improper access control on log retrieval and unauthenticated build endpoints. The weakness is classified as CWE-639, Authorization Bypass Through User-Controlled Key.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 7.1(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 10, 2026.
Disclosure date: July 30, 2026

Weaknesses and techniques

Weakness (CWE): CWE-639

Classification

Attack sophistication: Moderate
AI component targeted: Framework
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-12945

First tracked: July 30, 2026 at 02:08 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)