CVE-2021-23824

This affects the package Crow before 0.3+4. When using attributes without quotes in the template, an attacker can manipulate the input to introduce additional attributes, potentially executing code. This may lead to a Cross-site Scripting (XSS) vulnerability, assuming an attacker can influence the value entered into the template. If the template is used to render user-generated content, this vulnerability may escalate to a persistent XSS vulnerability.

• CWE-79

• https://github.com/CrowCpp/Crow/pull/317Issue Tracking, Patch, Third Party Advisory
• https://github.com/CrowCpp/Crow/releases/tag/v0.3%2B4Release Notes, Third Party Advisory
• https://snyk.io/vuln/SNYK-UNMANAGED-CROW-2336164Exploit, Third Party Advisory
• https://github.com/CrowCpp/Crow/pull/317Issue Tracking, Patch, Third Party Advisory
• https://github.com/CrowCpp/Crow/releases/tag/v0.3%2B4Release Notes, Third Party Advisory
• https://snyk.io/vuln/SNYK-UNMANAGED-CROW-2336164Exploit, Third Party Advisory

Published

Jan 13, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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