PT-2025-37319 · Gonja+1 · Gonja+1

Published 2025-09-12 · Updated 2025-09-17 · CVE-2025-9556

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: langchaingo (affected versions not specified)

Description: langchaingo utilizes the gonja library version 1.5.3 to parse prompts that support jinja2 syntax. The gonja library’s support for include and extend syntax, which allows reading files, introduces a server-side template injection issue. This allows an attacker to inject a statement into a prompt to read arbitrary files, such as the /etc/passwd file.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2025-9556

GHSA-MGCJ-G55G-RF6H

Affected Products

Gonja

Langchaingo

References · 13

• https://osv.dev/vulnerability/CVE-2025-9556 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-9556 · Security Note
• https://github.com/tmc/langchaingo/security/advisories/GHSA-mgcj-g55g-rf6h · Note
• https://github.com/tmc/langchaingo/pull/1348 · Note
• https://kb.cert.org/vuls/id/949137 · Note
• https://twitter.com/SecAlertsCo/status/1967796436118192483 · Twitter Post
• https://t.me/pentestingnews/68115 · Telegram Post
• https://twitter.com/CVEnew/status/1966499919172116529 · Twitter Post
• https://twitter.com/fridaysecurity/status/1967385501524275304 · Twitter Post
• https://t.me/CVEtracker/32377 · Telegram Post
• https://twitter.com/dailytechonx/status/1967679821359550497 · Twitter Post
• https://twitter.com/cracbot/status/1968268766107648444 · Twitter Post
• https://twitter.com/CrowdCyber_Com/status/1967495538644865516 · Twitter Post