CVE-2021-26032
[20210501] - Core - Adding HTML to the executable block list of MediaHelper::canUpload
MEDIUM
6.1
CVSS Score
Published: May 26, 2021 at 10:22 AM UTC
Updated: June 17, 2026 at 03:42 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! 3.0.0 through 3.9.26. HTML was missing in the executable block list of MediaHelper::canUpload, leading to XSS attack vectors.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
3.0.0 ≤ v ≤ 3.9.263.0.0-3.9.26
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://developer.joomla.org/security-centre/852-20210501-core-adding-html-to-the-executable-block-list-of-mediahelper-canupload.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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