FX Currency Converter <= 0.2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
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 FX Currency Converter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'fxcc_convert' shortcode in all versions up to, and including, 0.2.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-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
- Yes
- 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 |
|---|---|---|---|---|---|
| falselight | FX Currency Converter | up to 0.2.0 | — | No fix listed | CNA |
- FX Currency Converter Vendorfalselight Affected up to 0.2.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-13963
- 2026-10-03 Alias added: GHSA-j87r-hg74-r32h
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d01a7887-afd7-418b-99ad-92157582a506?source=cve
- https://plugins.trac.wordpress.org/browser/fx-currency-converter/trunk/includes/shortcode.php#L57
- https://plugins.trac.wordpress.org/browser/fx-currency-converter/tags/0.2.0/includes/shortcode.php#L57
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3415819%40fx-currency-converter&new=3415819%40fx-currency-converter&sfp_email=&sfph_mail=
More falselight vulnerabilities
- TI-2025-36292 WordPress Exchange Rates Plugin <= 1.2.5 - Cross Site Scripting (XSS) Vulnerability CVSS 3.1MEDIUM 6.5
- TI-2024-10905 Currency Converter Widget ⚡ PRO <= 1.0.6 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4
- TI-2024-36396 WordPress Cryptocurrency Price Widget plugin <= 1.2.3 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 5.9
- TI-2025-22134 WordPress Exchange Rates plugin <= 1.2.2 - Broken Access Control vulnerability CVSS 3.1MEDIUM 4.3
Sources
- CVE-2025-13963 · CVE Program
- CVE-2025-13963 · NVD
- FIRST EPSS
- GHSA-j87r-hg74-r32h · 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