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CVE-2023-39631

Status: ModifiedCritical (9.8)—
Severity9.8Critical · CVSS 3.1
Exploitation probability1.60 %higher than 76% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary code via the evaluate function in the numexpr library.

CVSS

Base score
9.8
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.60 %
Percentile among all scored CVEs
76
Score date
10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Langchain — Langchain

CWEs

References

Show 4 references

Raw JSON (NVD)

Show
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  "lastModified": "2026-06-17T06:12:38.260",
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