SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-29374

In LangChain through 0.0.131, the LLMMathChain chain allows prompt injection attacks that can execute arbitrary code via the Python exec method.

CRITICAL 9.8EPSS 39.7%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 39.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

In LangChain through 0.0.131, the LLMMathChain chain allows prompt injection attacks that can execute arbitrary code via the Python exec method.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
39.65% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-74
Affected
langchain/langchain
Source
cve@mitre.org
EPSS trend
0%20%40%3 November 2026: 39.65%3 November 20263 November 2026

EPSS 39.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.