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TI-2023-05204 Aliases CVE-2023-5660GHSA-558c-wr25-5fxf

SendPress Newsletters <= 1.22.3.31 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Priority LOW 30CWE-79Published · Updated

Key facts

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

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

Summary

The SendPress Newsletters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 1.22.3.31 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00664 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
brewlabsSendPress Newslettersup to 1.22.3.31—No fix listedCNA
  • SendPress Newsletters Vendorbrewlabs Affected up to 1.22.3.31 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pressified:sendpress:*:*:*:*:*:wordpress:*:*before 1.23.11.6VulnerableSendPress
  • cpe:2.3:a:pressified:sendpress:*:*:*:*:*:wordpress:*:* Versions before 1.23.11.6 Vulnerable ·SendPress

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-5660
  2. 2026-10-03 Alias added: GHSA-558c-wr25-5fxf
  3. 2026-10-05 EPSS moved to the 50th–90th percentile

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-67988 SQL injection in WordPress SendPress Newsletters plugin CVSS 3.1CRITICAL 9.3
  • TI-2025-31457 WordPress SensorPress plugin <= 1.0 - Cross Site Scripting (XSS) vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-82274 Unauthenticated SQL injection in SendPress Newsletters plugin CVSS 3.1HIGH 7.5
  • TI-2025-26281 WordPress WP Email Delivery plugin <= 1.20.11.23 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1

Sources

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