How severe is CVE-2023-29374?

CVE-2023-29374 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-29374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 40% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-29374?

CVE-2023-29374 affects Langchain. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-29374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-29374 published?

CVE-2023-29374 was published on 2023-04-05 and last updated on 2026-06-17.

CVE-2023-29374

CVE-2023-29374 is a critical-severity vulnerability in Langchain with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 40% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-74.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 40% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Langchain
Published: 2023-04-05
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2023-29374?: CVE-2023-29374 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-29374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 40% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-29374?: CVE-2023-29374 affects Langchain. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-29374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-29374 published?: CVE-2023-29374 was published on 2023-04-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:langchain:langchain:*:*:*:*:*:*:*:*

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