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CVE-2025-9556

CRITICAL

9.8

Description

Langchaingo supports the use of jinja2 syntax when parsing prompts, which is in turn parsed using the gonja library v1.5.3. Gonja supports include and extends syntax to read files, which leads to a server side template injection vulnerability within langchaingo, allowing an attacker to insert a statement into a prompt to read the "etc/passwd" file.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/12/2025

Last Modified11/3/2025

Sourcenvd

Honeypot Sightings0

References

https://github.com/tmc/langchaingo/pull/1348(cret@cert.org)

https://github.com/tmc/langchaingo/security/advisories/GHSA-mgcj-g55g-rf6h(cret@cert.org)

https://www.kb.cert.org/vuls/id/949137(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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