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TI-2026-68298 Aliases CVE-2026-104814GHSA-99hr-mrh8-j9g3

Cross-site scripting in WordPress Form Block plugin

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Form Block plugin for WordPress by epiphyt is affected through 1.8.1. Improper neutralization of input during web page generation (CWE-79) lets attacker-supplied script reach pages that other users view. An unauthenticated remote attacker can run script in a victim's browser, and the attack requires a user to interact with a crafted page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Unauthenticated Cross Site Scripting (XSS) in Form Block <= 1.8.1 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0023 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
epiphytForm Blockup to 1.8.1—No fix listedCNA
  • Form Block Vendorepiphyt Affected up to 1.8.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Form Block.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-104814
  2. 2026-10-06 Alias added: GHSA-99hr-mrh8-j9g3
  3. 2026-10-06 CISA SSVC decision points changed
  4. 2026-10-06 Priority changed: MEDIUM → LOW

References

Other 1

  • TI-2023-26163 Embed Privacy missing escaping for show_all attribute in opt-out shortcode CVSS 3.1MEDIUM 6.3
  • TI-2025-34456 WordPress Form Block Plugin <= 1.5.5 - Arbitrary File Upload Vulnerability CVSS 3.1CRITICAL 9.0
  • TI-2026-41283 WordPress Embed Privacy plugin <= 1.12.3 - Arbitrary File Deletion vulnerability CVSS 3.1HIGH 7.1
  • TI-2023-28340 WordPress Embed Privacy Plugin <= 1.8.0 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 6.5
  • TI-2023-14432 Cross Site Request Forgery due to missing nonce verification in form block CVSS 3.1MEDIUM 6.5

Sources

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