Header Footer Script Adder <= 2.1 - Authenticated (Author+) Stored Cross-Site Scripting via 'asm_code' Snippet Meta
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- 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 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Header Footer Script Adder – Insert Code in Header, Body & Footer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'asm_code' Snippet Meta in all versions up to, and including, 2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 |
|---|---|---|---|---|---|
| mahethekiller | Header Footer Script Adder | up to 2.1 | — | No fix listed | CNA |
- Header Footer Script Adder Vendormahethekiller Affected up to 2.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15394
- 2026-10-03 Alias added: GHSA-6gm9-485j-jqr3
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c394c9bc-21f6-45ea-8eda-8ee22a9b87ba?source=cve
- https://plugins.trac.wordpress.org/browser/header-and-footer-script-adder/tags/2.1/pro/class-pro-admin.php#L400
- https://plugins.trac.wordpress.org/browser/header-and-footer-script-adder/tags/2.1/pro/class-pro-public.php#L145
- https://plugins.trac.wordpress.org/browser/header-and-footer-script-adder/tags/2.1/pro/class-pro-public.php#L253
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3611085%40header-and-footer-script-adder&new=3611085%40header-and-footer-script-adder
More mahethekiller vulnerabilities
- TI-2025-11105 Cross-site scripting in mahethekiller Header Footer Script Adder – Insert Code in Header… CVSS 3.1MEDIUM 6.4
Sources
- CVE-2026-15394 · CVE Program
- CVE-2026-15394 · NVD
- FIRST EPSS
- GHSA-6gm9-485j-jqr3 · 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