CVE-2021-23129
[20210303] - Core - XSS within alert messages showed to users
MEDIUM
6.1
CVSS Score
Published: March 4, 2021 at 05:37 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorJoomla!
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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.8%
Description
An issue was discovered in Joomla! 2.5.0 through 3.9.24. Missing filtering of messages showed to users that could lead to xss issues.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
2.5.0 ≤ v < 3.9.252.5.0-3.9.24
Affected range stops below 3.9.25, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://developer.joomla.org/security-centre/843-20210303-core-xss-within-alert-messages-showed-to-users.htmlCVSS
- 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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