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Stored cross-site scripting in VikWidgetsLoader WordPress plugin

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 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

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00235 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed VikWidgetsLoader (Unknown): 1.12.3

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

VendorProductAffected versionsFixed inStatusSource
UnknownVikWidgetsLoaderbefore 1.12.31.12.3Patch availableCNA
  • 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

  1. 2026-11-04 Threatist record created from CVE-2026-118983
  2. 2026-11-04 Alias added: GHSA-f2j8-6vrw-jhhv
  3. 2026-11-04 CVSS score added · CISA ADP
  4. 2026-11-04 Weakness changed · CISA ADP
  5. 2026-11-04 CISA SSVC decision points changed

References

Sources