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CVE-2021-41170

9.8 · CRITICAL

neoan3-apps/template is a neoan3 minimal template engine.

Published Nov 8, 2021CWE-74EPSS 1.58%

Overview

CVE-2021-41170 is a critical-severity vulnerability. It was published on November 8, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

neoan3-apps/template is a neoan3 minimal template engine. Versions prior to 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. Version 1.1.1 has addressed this vulnerability. Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/sroehrl/neoan3-template/commit/4a2c9570f071d3c8f4ac790007599cba20e16934GitHubgithub.com/sroehrl/neoan3-template/issues/8GitHubgithub.com/sroehrl/neoan3-template/security/advisories/GHSA-3v56-q6r6-4gcwGitHubgithub.com/sroehrl/neoan3-template/commit/4a2c9570f071d3c8f4ac790007599cba20e16934GitHubgithub.com/sroehrl/neoan3-template/issues/8GitHubgithub.com/sroehrl/neoan3-template/security/advisories/GHSA-3v56-q6r6-4gcw

How CyberStrike helps

Frequently asked questions

What is CVE-2021-41170?

CVE-2021-41170 is a critical-severity vulnerability. It was published on November 8, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2021-41170?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-41170?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-41170?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-41170 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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