DEBIAN-CVE-2024-56326

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2024-56326
Downstream
DLA-4126-1
Published: 23 Dec 2024, 16:15
Last modified:28 Apr 2026, 20:29

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.4 MEDIUM
4.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Dec 2024, 16:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:29
Last Modified
Vulnerability information updated

Description

Jinja is an extensible templating engine. Prior to 3.1.5, An oversight in how the Jinja sandboxed environment detects calls to str.format allows an attacker that controls the content of a template to execute arbitrary Python code. To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates. Jinja's sandbox does catch calls to str.format and ensures they don't escape the sandbox. However, it's possible to store a reference to a malicious string's format method, then pass that to a filter that calls it. No such filters are built-in to Jinja, but could be present through custom filters in an application. After the fix, such indirect calls are also handled by the sandbox. This vulnerability is fixed in 3.1.5.

CVSS Metrics

  • v4.0•MEDIUM•Score: 5.4CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected Systems

  • debian•jinja2

    < 2.11.3-1+deb11u3 | < 3.1.2-1+deb12u2 | < 3.1.5-1 | < 3.1.5-1

References (1)