High 7.5Published May 26, 2026

CVE-2026-44209Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI

Updated under an hour ago (Oct 27, 2026, 9:00 PM ET)

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It affects masci banks and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Banks generates meaningful LLM prompts using a template language that makes sense. Prior to 2.4.2, banks uses jinja2.Environment() (unsandboxed) to render prompt templates. Applications that pass user-supplied strings as the template argument to Prompt() are vulnerable to Server-Side Template Injection (SSTI), which can lead to Remote Code Execution (RCE) on the host system. This vulnerability is fixed in 2.4.2.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-1336, CWE-917
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

masci banks masci:banks (from the name)	before 2.4.2	CNA record
Red Hat Exploit Intelligence redhat:exploit_intelligence	0	CISA ADP
Red Hat OpenShift Lightspeed redhat:openshift_lightspeed	Versions not stated	CISA ADP
Red Hat Red Hat Ansible Automation Platform 2 redhat:ansible_automation_platform	2	CISA ADP

References

References

https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp	x-refsource-confirm
https://github.com/masci/banks/pull/74	x-refsource-misc
https://access.redhat.com/security/cve/CVE-2026-44209
https://bugzilla.redhat.com/show_bug.cgi?id=2481713
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44209.json

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.