Cross-site Scripting (XSS) - Stored in craigk5n/webcalendar
Priority MEDIUM 58CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Cross-site Scripting (XSS) - Stored in GitHub repository craigk5n/webcalendar prior to master.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00541 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed craigk5n/webcalendar (craigk5n): master
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| craigk5n | craigk5n/webcalendar | before master | master | Patch available | CNA |
- craigk5n/webcalendar Vendorcraigk5n Affected before master Fixed in master Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:webcalendar_project:webcalendar:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Webcalendar Project |
- cpe:2.3:a:webcalendar_project:webcalendar:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Webcalendar Project
Remediation
- Fix · CNA craigk5n/webcalendar (craigk5n) Fixed in master
Timeline
- 2026-10-02 Threatist record created from CVE-2023-0289
- 2026-10-03 Alias added: GHSA-8q3w-w8q9-w8gf
References
More Webcalendar Project Webcalendar vulnerabilities
- TI-2012-01308 install/index.php in WebCalendar before 1.2.5 allows remote attackers to execute… CVSS 3.1CRITICAL 9.8
- TI-2024-15086 WebCalendar v1.3.0 was discovered to contain a reflected cross-site scripting (XSS)… CVSS 3.1MEDIUM 6.1
- TI-2012-01309 Local file inclusion in WebCalendar before 1.2.5. CVSS 3.1HIGH 8.8
- TI-2012-04558 install/index.php in Craig Knudsen WebCalendar before 1.2.5 allows remote attackers to… CVSS 2.0HIGH 7.5
- TI-2017-07941 Cross-site scripting in k5n.us WebCalendar CVSS 3.0MEDIUM 6.1
- TI-2017-07942 Path traversal in k5n.us WebCalendar CVSS 3.0MEDIUM 4.9
Sources
- CVE-2023-0289 · CVE Program
- CVE-2023-0289 · NVD
- FIRST EPSS
- GHSA-8q3w-w8q9-w8gf · 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