Stored cross-site scripting in Post Snippets WordPress plugin
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The Post Snippets WordPress plugin through 4.2.4 does not properly escape variable values substituted into snippets before output (CWE-79). An attacker with the Contributor role or higher can inject scripts that run when the content is viewed. The references include a link to an exploit.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The Post Snippets WordPress plugin through 4.2.4 does not properly escape variable values substituted into snippets before outputting them, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when the content is viewed.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | Post Snippets | up to 4.2.4 | — | No fix listed | CNA |
- Post Snippets VendorUnknown Affected up to 4.2.4 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Post Snippets.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-11 Threatist record created from CVE-2026-12980
- 2026-10-11 Alias added: GHSA-qq38-mwrv-h27q
References
Sources
- CVE-2026-12980 · CVE Program
- CVE-2026-12980 · NVD
- FIRST EPSS
- GHSA-qq38-mwrv-h27q · 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