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TI-2026-63923 Aliases CVE-2026-96899GHSA-xprw-377p-8v85

Optima Express 8.6.0 - 8.7.5 - Author+ Stored XSS via faq_script

Priority LOW 31CWE-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 Optima Express IDX WordPress plugin before 8.7.6 does not properly neutralise a script value submitted through one of its REST endpoints before storing it and echoing it into the document head when the post is rendered, allowing users with a role as low as author to perform Stored Cross-Site Scripting attacks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Optima Express IDX (Unknown): 8.7.6

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
UnknownOptima Express IDX8.6.0 to before 8.7.68.7.6Patch availableCNA
  • Optima Express IDX VendorUnknown Affected 8.6.0 to before 8.7.6 Fixed in 8.7.6 Patch available CNA

Remediation

  • Fix · CNA Optima Express IDX (Unknown) Fixed in 8.7.6

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Optima Express IDX 8.7.6

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-63921 Missing authorization in Optima Express IDXPriority LOW 29
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-96899
  2. 2026-10-03 Alias added: GHSA-xprw-377p-8v85

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences