CVE-2026-3345

MEDIUMPre-NVD 6.56.5—

6.5

IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

CVSS v3: 6.5
EG Score: 6.5(high)
EPSS: 18.6%
KEV: Not listed

Published

April 30, 2026

Last Modified

May 27, 2026

Advisory Details (1)

Auto-updated Apr 30, 2026

No patch confirmed yet.

generic

Security Bulletin: Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint

https://www.ibm.com/support/pages/node/7271094

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-22Path Traversal

Data Freshness Timeline

(refreshed 15× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-20 22:38 UTCepss_batch
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2026-05-20 14:59 UTCEG score recompute
2026-05-20 14:59 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-3345?

CVE-2026-3345 is a medium vulnerability published on April 30, 2026. IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

When was CVE-2026-3345 disclosed?

CVE-2026-3345 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-3345 actively exploited?

CVE-2026-3345 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-3345?

CVE-2026-3345 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2026-3345?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3345, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-3345

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Security Bulletin: Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-3345?

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Advisory Details (1)

Frequently asked(5)

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