Conference Scheduler <= 2.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via className Parameter
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Conference Scheduler plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and including, 2.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-5258
- 2026-10-03 Alias added: GHSA-h92v-jw8j-wqf3
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0d0a03e5-b09c-430d-aa65-8ef9e01cf241?source=cve
- https://plugins.trac.wordpress.org/browser/conference-scheduler/trunk/conf-scheduler.php#L1703
- https://wordpress.org/plugins/conference-scheduler/#developers
- https://plugins.trac.wordpress.org/changeset/3316436/
More Swift vulnerabilities
- TI-2026-65766 Capacitor Android and iOS: remote content can be loaded at the app origin via the internal HTTP proxy path CVSS 3.1CRITICAL 9.3
- TI-2020-07937 Uncontrolled recursion in Swift 5.1.5 for Linux CVSS 3.1HIGH 7.5
- TI-2020-07917 In SwiftNIO Extras before 1.4.1, a logic issue was addressed with improved restrictions. CVSS 3.1HIGH 7.5
- TI-2018-11744 An issue was discovered in SWIFT Alliance Web Platform 7.1.23. CVSS 3.0HIGH 7.5
Sources
- CVE-2025-5258 · CVE Program
- CVE-2025-5258 · NVD
- FIRST EPSS
- GHSA-h92v-jw8j-wqf3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences