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TI-2026-73902 Aliases CVE-2026-97315GHSA-cpgh-j438-6wxq

HTML injection in Responsive Blocks form notification email

Priority LOW 24CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The Responsive Blocks WordPress plugin before 2.3.0 does not sanitise or escape values submitted with its Form block before placing them in the HTML notification email sent to the site owner (CWE-74). An unauthenticated remote attacker can inject arbitrary HTML, such as phishing links, into that email. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The Responsive Blocks WordPress plugin before 2.3.0 does not sanitise or escape some of the values submitted with its Form block before adding them to the HTML notification email sent to the site owner, allowing unauthenticated users to inject arbitrary HTML, such as phishing links, into that email.

Why it matters now

Exploitation None reported 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 Responsive Blocks (Unknown): 2.3.0

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
UnknownResponsive Blocksbefore 2.3.02.3.0Patch availableCNA
  • Responsive Blocks VendorUnknown Affected before 2.3.0 Fixed in 2.3.0 Patch available CNA

Remediation

Update the Responsive Blocks plugin to version 2.3.0, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Responsive Blocks (Unknown) Fixed in 2.3.0

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-97315
  2. 2026-10-14 Weakness changed · CISA ADP
  3. 2026-10-14 CISA SSVC decision points changed
  4. 2026-10-14 Priority changed: MEDIUM → LOW
  5. 2026-10-14 Alias added: GHSA-cpgh-j438-6wxq

References

Exploit 1

Sources

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