mediumCVSS 6.1Vulnerability
CVE-2026-77608
#### 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.
Properties
- ghsa_id
- GHSA-59xw-qv23-j3rc
- severity
- medium
- summary
- Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)
- cvss_score
- 6.1
- cve_id
- CVE-2026-77608
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- signal_observed_at
- 2026-09-18T17:46:44+00:00
- is_ghsa_only
- false
- ghsa_published
- 2026-09-18T16:42:50Z
- source_url
- https://github.com/advisories/GHSA-59xw-qv23-j3rc
- ghsa_updated
- 2026-09-18T16:42:52Z
Related Entities (4)
REPORTED_BY (1)
→[Source]GitHub Advisory Database
VULNERABLE_TO (1)
←[Software]composer/mediawiki/semantic-media-wiki
AFFECTS (1)
→[Software]composer/mediawiki/semantic-media-wiki
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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