Stored cross-site scripting in VikWidgetsLoader 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
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The VikWidgetsLoader WordPress plugin before 1.12.3 does not sanitise or escape several block attributes before outputting them inside HTML attributes (CWE-79). A user with the Contributor role can store JavaScript that runs in the browser of any user who views the affected post, including administrators or editors who review pending submissions. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
The VikWidgetsLoader WordPress plugin before 1.12.3 does not sanitise or escape several block attributes before outputting them inside HTML attributes, allowing users with the Contributor role to store arbitrary JavaScript that executes in the browser of any user viewing the affected post, including the administrator or editor who reviews the pending submission.
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 | VikWidgetsLoader | before 1.12.3 | 1.12.3 | Patch available | CNA |
- VikWidgetsLoader VendorUnknown Affected before 1.12.3 Fixed in 1.12.3 Patch available CNA
Remediation
Update VikWidgetsLoader to version 1.12.3, the fixed version. The sources list no vendor advisory for this fix.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
- Fix · CNA VikWidgetsLoader (Unknown) Fixed in 1.12.3
Timeline
- 2026-11-04 Threatist record created from CVE-2026-118983
- 2026-11-04 Alias added: GHSA-f2j8-6vrw-jhhv
- 2026-11-04 CVSS score added · CISA ADP
- 2026-11-04 Weakness changed · CISA ADP
- 2026-11-04 CISA SSVC decision points changed
References
Sources
- CVE-2026-118983 · CVE Program
- CVE-2026-118983 · NVD
- FIRST EPSS
- GHSA-f2j8-6vrw-jhhv · 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