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CVE-2021-23824

Content Injection

MEDIUM
6.1
CVSS Score
Published: January 13, 2022 at 02:10 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorCrow

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.9%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Crow· Crowcppc-cpp
95%
v < 0.3+4
Affected range stops below 0.3+4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/CrowCpp/Crow/pull/317
x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/CrowCpp/Crow/releases/tag/v0.3%2B4
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-UNMANAGED-CROW-2336164

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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