Spiffy Calendar <= 4.9.8 — Insufficient Authorization
CVE-2024-0855Published · Updated Action summary
Affected: ≤4.9.8Update to 4.9.9 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-863 Incorrect Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Spiffy Calendar spiffy-calendar
- Affected≤ 4.9.8
- Patched in4.9.9
Update to 4.9.9 or newer.
You are affected if you run ≤ 4.9.8. Version 4.9.9 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Spiffy Calendar.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.9.9, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Spiffy Calendar to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to cyc707.
The Spiffy Calendar plugin for WordPress is vulnerable to unauthorized modification of data due insufficient restrictions on the event_author parameter in all versions up to, and including, 4.9.8. This makes it possible for authenticated attackers, with contributor-level access and above, to make an event appear as though it was created by another user.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Spiffy Calendar
All 15| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤5.0.8Update to 5.0.9 | CVE-2026-39071 | |
| Medium4.3 | Missing Authorization ≤5.0.7Update to 5.0.8 | CVE-2025-68523 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤4.9.13Update to 4.9.14 | CVE-2024-45457 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤4.9.13Update to 4.9.14 | CVE-2024-45458 | |
| Medium4.9 | Authenticated (Admin+) SQL Injection ≤4.9.12Update to 4.9.13 | CVE-2024-43969 |
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤5.0.8Update to 5.0.9
- Medium4.3Missing Authorization
≤5.0.7Update to 5.0.8
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤4.9.13Update to 4.9.14
- Medium6.1Reflected Cross-Site Scripting
≤4.9.13Update to 4.9.14
- Medium4.9Authenticated (Admin+) SQL Injection
≤4.9.12Update to 4.9.13
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.