CVE-2026-3357

HIGHNVD 8.88.8—

8.8

IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 70.6%
KEV: Not listed

Published

April 8, 2026

Last Modified

April 14, 2026

Advisory Details (1)

Auto-updated May 22, 2026

No patch confirmed yet.

generic

Security Bulletin: IBM Langflow Desktop FAISS Vector Store Remote Code Execution via malicious Pickle file

https://www.ibm.com/support/pages/node/7268428

Weakness Classification(1)

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

CWE-502Deserialization of Untrusted Data

Data Freshness Timeline

(refreshed 16× 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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2026-05-31 00:16 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-20 22:38 UTCepss_batch
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2026-05-20 18:34 UTCEG score recompute
2026-05-20 18:34 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-3357?

CVE-2026-3357 is a high vulnerability published on April 8, 2026. IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.

When was CVE-2026-3357 disclosed?

CVE-2026-3357 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on April 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-3357 actively exploited?

CVE-2026-3357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 70.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-3357?

CVE-2026-3357 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2026-3357?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3357, 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.

Dependency Blast Radius

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CVE-2026-3357

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Security Bulletin: IBM Langflow Desktop FAISS Vector Store Remote Code Execution via malicious Pickle file

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-3357?

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Frequently asked(5)

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