YMC Filter < 3.12.9 - Author+ Stored XSS via SVG Icon Upload
Priority LOW 32CWE-79Published · Updated
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
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The YMC Filter WordPress plugin before 3.12.9 does not sanitize SVG files uploaded through one of its icon upload features and permits their upload by low-privileged users, allowing users with the Author role and above to upload a file containing JavaScript that executes in the site's origin when the file is viewed.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00431 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed YMC Filter (Unknown): 3.12.9
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 | YMC Filter | before 3.12.9 | 3.12.9 | Patch available | CNA |
- YMC Filter VendorUnknown Affected before 3.12.9 Fixed in 3.12.9 Patch available CNA
Remediation
- Fix · CNA YMC Filter (Unknown) Fixed in 3.12.9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16559
- 2026-10-03 Alias added: GHSA-qgw2-v7vq-9g5r
References
Sources
- CVE-2026-16559 · CVE Program
- CVE-2026-16559 · NVD
- FIRST EPSS
- GHSA-qgw2-v7vq-9g5r · 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