HighVulnerability

CVE-2026-13445: IBM Langflow OSS SaveToFile allows reading and modifying other users' files

Source: NVD(opens in a new tab)
Identifier: CVE-2026-13445
Published: July 17, 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

IBM Langflow OSS versions 1.0.0 through 1.10.1 contain a flaw in the SaveToFile component. An authenticated attacker can supply absolute paths to victim storage locations, reading and modifying other users' uploaded files and breaking the storage ownership boundary between users. In append mode the attacker can read victim contents and copy them into their own namespace, and in overwrite mode they can replace victim file contents.

Mitigation

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

Details

Scores and exploitation

CVSS score: 8.1(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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 12, 2026.
Disclosure date: July 17, 2026

Weaknesses and techniques

Weakness (CWE): CWE-639

Classification

Attack type: Other
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-2026-13445

First tracked: July 17, 2026 at 08:07 PM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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