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TI-2023-05119 Aliases CVE-2023-5561GHSA-x7w6-3cp2-qjcv

WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure

Priority MEDIUM 63Published · Updated

Key facts

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

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

Summary

WordPress does not properly restrict which user fields are searchable via the REST API, allowing unauthenticated attackers to discern the email addresses of users who have published public posts on an affected website via an Oracle style attack

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.04335 91st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Fixed WordPress (WordPress): 6.3.2, 6.2.3, 6.1.4 +13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
WordPressWordPress6.3.0 to before 6.3.2; 6.2.0 to before 6.2.3; 6.1.0 to before 6.1.4; 6.0.0 to before 6.0.6; 5.9.0 to before 5.9.8; 5.8.0 to before 5.8.8; 5.7.0 to before 5.7.10; 5.6.0 to before 5.6.12; 5.5.0 to before 5.5.13; 5.4.0 to before 5.4.14; 5.3.0 to before 5.3.16; 5.2.0 to before 5.2.19; 5.0.0 to before 5.0.20; 4.9.0 to before 4.9.24; 4.8.0 to before 4.8.23; 4.7.0 to before 4.7.276.3.2, 6.2.3, 6.1.4, 6.0.6, 5.9.8, 5.8.8, 5.7.10, 5.6.12, 5.5.13, 5.4.14, 5.3.16, 5.2.19, 5.0.20, 4.9.24, 4.8.23, 4.7.27Patch availableCNA
  • WordPress VendorWordPress Affected 6.3.0 to before 6.3.2; 6.2.0 to before 6.2.3; 6.1.0 to before 6.1.4; 6.0.0 to before 6.0.6; 5.9.0 to before 5.9.8; 5.8.0 to before 5.8.8; 5.7.0 to before 5.7.10; 5.6.0 to before 5.6.12; 5.5.0 to before 5.5.13; 5.4.0 to before 5.4.14; 5.3.0 to before 5.3.16; 5.2.0 to before 5.2.19; 5.0.0 to before 5.0.20; 4.9.0 to before 4.9.24; 4.8.0 to before 4.8.23; 4.7.0 to before 4.7.27 Fixed in 6.3.2, 6.2.3, 6.1.4, 6.0.6, 5.9.8, 5.8.8, 5.7.10, 5.6.12, 5.5.13, 5.4.14, 5.3.16, 5.2.19, 5.0.20, 4.9.24, 4.8.23, 4.7.27 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*4.7 to before 4.7.27; 4.8 to before 4.8.23; 4.9 to before 4.9.24; 5.0 to before 5.0.20; 5.1 to before 5.1.17; 5.2 to before 5.2.19; 5.3 to before 5.3.16; 5.4 to before 5.4.14; 5.5 to before 5.5.13; 5.6 to before 5.6.12; 5.7 to before 5.7.10; 5.8 to before 5.8.8; 5.9 to before 5.9.8; 6.0 to before 6.0.6; 6.1 to before 6.1.4; 6.2 to before 6.2.3; 6.3 to before 6.3.2VulnerableWordPress
  • cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* Versions 4.7 to before 4.7.27; 4.8 to before 4.8.23; 4.9 to before 4.9.24; 5.0 to before 5.0.20; 5.1 to before 5.1.17; 5.2 to before 5.2.19; 5.3 to before 5.3.16; 5.4 to before 5.4.14; 5.5 to before 5.5.13; 5.6 to before 5.6.12; 5.7 to before 5.7.10; 5.8 to before 5.8.8; 5.9 to before 5.9.8; 6.0 to before 6.0.6; 6.1 to before 6.1.4; 6.2 to before 6.2.3; 6.3 to before 6.3.2 Vulnerable ·WordPress

Remediation

  • Fix · CNA WordPress (WordPress) Fixed in 6.3.2, 6.2.3, 6.1.4, 6.0.6, 5.9.8, 5.8.8, 5.7.10, 5.6.12, 5.5.13, 5.4.14, 5.3.16, 5.2.19, 5.0.20, 4.9.24, 4.8.23, 4.7.27

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-5561
  2. 2026-10-03 Alias added: GHSA-x7w6-3cp2-qjcv
  3. 2026-10-14 EPSS moved to the 90th–95th percentile

References

Exploit 2

Other 1

  • TI-2026-45010 WordPress < 7.0.2 - REST API batch-route confusion and SQL injection issue leading to Remote Code Execution KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-08118 The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow… KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-83466 Predictable staging paths let attackers run code in WordPress Core KEVCVSS 3.1HIGH 8.1
  • TI-2026-59973 An unauthenticated attacker can make `get_page_template()` page-template resolution… KEVCVSS 3.1HIGH 8.1
  • TI-2016-08129 The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass… CVSS 3.1CRITICAL 9.8
  • TI-2026-42844 WordPress < 7.0.2 - Facilitated SQL Injection via author__not_in in WP_Query KEVCVSS 3.1MEDIUM 5.9
See all 356 →

Sources

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