CVE-2024-56201

Arbitrary code execution via unescaped template filename

Published Dec 23, 2024 · Updated Feb 18, 2025

Code injection in Pallets Jinja 3.0.0 through 3.1.4 allows attackers to execute arbitrary Python code via a crafted template filename. In compiler.py, visit_FromImport inserts the unescaped template position, including its filename, into generated f-string source, so braces in the name become executable expressions. Exploitation requires control of both template content and filename and a from-import path that reaches the generated error message; successful execution escapes the sandbox and runs with the embedding application's privileges.

CVSS severity5.4
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Pallets Jinja 3.0.0 through 3.1.4 allows attackers to execute arbitrary Python code via a crafted template filename. In compiler.py, visit_FromImport inserts the unescaped template position, including its filename, into generated f-string source, so braces in the name become executable expressions. Exploitation requires control of both template content and filename and a from-import path that reaches the generated error message; successful execution escapes the sandbox and runs with the embedding application's privileges.

The record

CVE
CVE-2024-56201
Published
Dec 23, 2024
Updated
Feb 18, 2025
Vendor
Pallets
Product
Jinja
Classifications
CWE-150, T1059.006
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 3.0.0, < 3.1.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Pallets · Jinjaversion=>= 3.0.0, < 3.1.5

Published CVSS scores

5.4GitHub CNACVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-150Improper Neutralization of Escape, Meta, or Control Sequences
T1059.006Command and Scripting Interpreter: Python

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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