What is CVE-2024-5998?

CVE-2024-5998 is a high-severity vulnerability in Langchain, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2024-09-17.

How severe is CVE-2024-5998?

High severity. CVSS v3 base score is 7.8 out of 10.

Deserialization in Langchain

CVE-2024-5998

A vulnerability in the FAISS.deserialize_from_bytes function of langchain-ai/langchain allows for pickle deserialization of untrusted data. This can lead to the execution of arbitrary commands via the os.system function. The issue affects the latest version of the product.

Vulnerability class: Insecure Deserialization

Published 2024-09-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Langchain
Langchain-Ai Langchain-Ai/langchain — versions unspecified

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

huntr.com/bounties/fa3a2753-57c3-4e08-a176-d7a3ffda28fe (Exploit, Third Party Advisory)
github.com/langchain-ai/langchain/commit/604dfe2d99246b0c09f047c604f0c63eafba31… (Patch)

Frequently asked questions

What is CVE-2024-5998?: CVE-2024-5998 is a high-severity vulnerability in Langchain, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2024-09-17.
How severe is CVE-2024-5998?: High severity. CVSS v3 base score is 7.8 out of 10.