CVE-2025-9556CVE-2025-9556
Updated under an hour ago ()
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It affects Langchaingo. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-200
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- certcc
- NVD analysis
- Deferred
- Record last updated
- Nov 3, 2025
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
Langchaingo Langchaingo langchaingo:langchaingo (from the name) | 0.1.14 | CNA record |
References
- https://github.com/tmc/langchaingo/security/advisories/GHSA-mgcj-g55g-rf6h
- https://github.com/tmc/langchaingo/pull/1348
- https://www.kb.cert.org/vuls/id/949137
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.