Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)
Failure mode
The value parameter was reflected back into rendered output and error messaging paths without enough output-context encoding.
Remediation
- The form value is escaped before it is placed back into the input field.
- Derived error messages are also escaped before being rendered into HTML.
Maintenance note
Do not treat error text as trusted just because it originated from validation. Validation output can still be attacker-influenced.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | mediawiki/semantic-media-wiki | < 7.2.0 | 7.2.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- Composer
- Package
mediawiki/semantic-media-wiki- Disclosed
- 18.09.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-59xw-qv23-j3rc - CC BY 4.0
Vulnerability history: mediawiki/semantic-media-wiki
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 12.2023 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 8
Disclosures per year
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 9
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Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters) this entry
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