Add Subtitle <= 1.1.0 - Contributor+ Stored Cross-Site Scripting
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
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
The Add Subtitle WordPress plugin through 1.1.0 does not sanitise or escape the sub-title field (available only with classic editor) when output in the page, which could allow users with a role as low as contributor to perform Cross-Site Scripting attacks
Why it matters now
EPSS 0.00604 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 | Add Subtitle | 1.1.0 – 1.1.0 | — | No fix listed | CNA |
- Add Subtitle VendorUnknown Affected 1.1.0 – 1.1.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:viitorcloud:add_subtitle:*:*:*:*:*:wordpress:*:* | up to 1.1.0 | Vulnerable | Viitorcloud |
- cpe:2.3:a:viitorcloud:add_subtitle:*:*:*:*:*:wordpress:*:* Versions up to 1.1.0 Vulnerable ·Viitorcloud
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-24897
- 2026-10-03 Alias added: GHSA-8hmm-58xr-mxjc
References
Sources
- CVE-2021-24897 · CVE Program
- CVE-2021-24897 · NVD
- FIRST EPSS
- GHSA-8hmm-58xr-mxjc · GitHub Advisory Database · CC BY 4.0
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