HighVulnerability

CVE-2026-4503: IBM Langflow Desktop unauthenticated access to other users' images

Source: NVD(opens in a new tab)
Identifier: CVE-2026-4503
Published: April 30, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.3%

Summary

CVE-2026-4503 affects IBM Langflow Desktop versions 1.0.0 through 1.8.4. An unauthenticated user can view other users' images because of an indirect object reference through a user-controlled key, classified as CWE-639 (Authorization Bypass Through User-Controlled Key). NVD has not yet provided an assessment.

Mitigation

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

Details

Scores and exploitation

CVSS score: 7.5(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: 0.3%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 8, 2026.
Disclosure date: April 30, 2026

Weaknesses and techniques

Weakness (CWE): CWE-639

Classification

Attack sophistication: Trivial
AI component targeted: Framework
Impact: Confidentiality
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-2026-4503

First tracked: May 1, 2026 at 02:07 AM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)