CVE-2021-4296

w3c Unicorn ValidatorNuMessage.java ValidatorNuMessage cross site scripting

MEDIUM
6.1
CVSS Score
Published: December 29, 2022 at 08:52 AM UTC
Updated: June 17, 2026 at 04:19 AM UTC
2 products affected across 2 vendorsUnicornUnicorn

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.6%

Description

A vulnerability, which was classified as problematic, has been found in w3c Unicorn. This issue affects the function ValidatorNuMessage of the file src/org/w3c/unicorn/response/impl/ValidatorNuMessage.java. The manipulation of the argument message leads to cross site scripting. The attack may be initiated remotely. The name of the patch is 51f75c31f7fc33859a9a571311c67ae4e95d9c68. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-217019.

Affected

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

v < 2021-06-03
Affected range stops below 2021-06-03, so it looks safe — our inference, not a vendor statement
All versions

Remediation

No guide yet

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

References (4)

Issue TrackingThird Party Advisory
https://github.com/w3c/Unicorn/pull/212
SignaturePermissions RequiredThird Party Advisory
https://vuldb.com/?ctiid.217019
VDB EntryTechnical DescriptionThird Party Advisory
https://vuldb.com/?id.217019

CVSS

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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