Slick Slider < 0.5.3 - Contributor+ Stored XSS via Gallery Shortcode
Priority MEDIUM 58CWE-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
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The Slick Slider WordPress plugin before 0.5.3 does not sanitize and escape a shortcode attribute value before outputting it in an HTML attribute, allowing users with the Contributor role and above to perform Stored Cross-Site Scripting attacks that execute when a user views the affected post.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00226 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Slick Slider (Unknown): 0.5.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| Unknown | Slick Slider | before 0.5.3 | 0.5.3 | Patch available | CNA |
- Slick Slider VendorUnknown Affected before 0.5.3 Fixed in 0.5.3 Patch available CNA
Remediation
- Fix · CNA Slick Slider (Unknown) Fixed in 0.5.3
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16537
- 2026-10-03 Alias added: GHSA-gvvh-735h-j96c
References
Sources
- CVE-2026-16537 · CVE Program
- CVE-2026-16537 · NVD
- FIRST EPSS
- GHSA-gvvh-735h-j96c · 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