Weekly Schedule < 3.4.3 - Authenticated Stored XSS
Priority LOW 25CWE-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
The "Schedule Name" input in the Weekly Schedule WordPress plugin before 3.4.3 general options did not properly sanitize input, allowing a user to inject javascript code using the <script> HTML tags and cause a stored XSS issue
Why it matters now
EPSS 0.0065 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Weekly Schedule (Unknown): 3.4.3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Weekly Schedule | 3.4.3 to before 3.4.3 | 3.4.3 | Patch available | CNA |
- Weekly Schedule VendorUnknown Affected 3.4.3 to before 3.4.3 Fixed in 3.4.3 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:weekly_schedule_project:weekly_schedule:*:*:*:*:*:wordpress:*:* | before 3.4.3 | Vulnerable | Weekly Schedule Project |
- cpe:2.3:a:weekly_schedule_project:weekly_schedule:*:*:*:*:*:wordpress:*:* Versions before 3.4.3 Vulnerable ·Weekly Schedule Project
Remediation
- Fix · CNA Weekly Schedule (Unknown) Fixed in 3.4.3
Timeline
- 2026-10-02 Threatist record created from CVE-2021-24309
- 2026-10-03 Alias added: GHSA-c864-88h8-cf2j
- 2026-10-16 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2021-24309 · CVE Program
- CVE-2021-24309 · NVD
- FIRST EPSS
- GHSA-c864-88h8-cf2j · GitHub Advisory Database · CC BY 4.0
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