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CVE-2021-29272

Good to know:

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Date: March 27, 2021

bluemonday before 1.0.5 allows XSS because certain Go lowercasing converts an uppercase Cyrillic character, defeating a protection mechanism against the "script" string.

Language: Go

Severity Score

Related Resources (9)

https://github.com/microcosm-cc/bluemonday/commit/524f142fe46e945b7dcd291d7805c4b7dcf75bee
https://github.com/microcosm-cc/bluemonday
https://vuln.ryotak.me/advisories/4
https://vuln.ryotak.me/advisories/4.txt
https://pkg.go.dev/vuln/GO-2022-0762
https://nvd.nist.gov/vuln/detail/CVE-2021-29272
https://github.com/microcosm-cc/bluemonday/releases/tag/v1.0.5
https://github.com/microcosm-cc/bluemonday/issues/111
https://www.mend.io/vulnerability-database/CVE-2021-29272

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade to version github.com/microcosm-cc/bluemonday - v1.0.5

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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