Spiffy Calendar < 4.9.9 - Broken Access Control
Priority MEDIUM 63Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
The Spiffy Calendar WordPress plugin before 4.9.9 doesn't check the event_author parameter, and allows any user to alter it when creating an event, leading to deceiving users/admins that a page was created by a Contributor+.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00482 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed Spiffy Calendar (Unknown): 4.9.9
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| Unknown | Spiffy Calendar | before 4.9.9 | 4.9.9 | Patch available | CNA |
- Spiffy Calendar VendorUnknown Affected before 4.9.9 Fixed in 4.9.9 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:spiffyplugins:spiffy_calendar:*:*:*:*:*:wordpress:*:* | before 4.9.9 | Vulnerable | Spiffy Plugins |
- cpe:2.3:a:spiffyplugins:spiffy_calendar:*:*:*:*:*:wordpress:*:* Versions before 4.9.9 Vulnerable ·Spiffy Plugins
Remediation
- Fix · CNA Spiffy Calendar (Unknown) Fixed in 4.9.9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-0855
- 2026-10-03 Alias added: GHSA-g77v-mcj9-92j3
References
More Spiffy Plugins Spiffy Calendar vulnerabilities
- TI-2022-23203 WordPress Spiffy Calendar Plugin <= 4.9.1 is vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2024-25926 WordPress spiffy-calendar plugin <= 4.9.11 - SQL Injection vulnerability CVSS 3.1HIGH 7.6
- TI-2024-30501 WordPress Spiffy Calendar plugin <= 4.9.13 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2023-27155 WordPress Spiffy Calendar Plugin <= 4.9.5 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 6.5
- TI-2022-11904 WordPress Spiffy Calendar plugin <= 4.9.0 - Edit/Delete event via IDOR vulnerability CVSS 3.1MEDIUM 6.3
- TI-2024-30500 WordPress Spiffy Calendar plugin <= 4.9.13 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
Sources
- CVE-2024-0855 · CVE Program
- CVE-2024-0855 · NVD
- FIRST EPSS
- GHSA-g77v-mcj9-92j3 · 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