CVE-2023-5561

WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure

MEDIUM

5.3

CVSS Score

Published: October 16, 2023 at 07:39 PM UTC

Updated: June 17, 2026 at 06:48 AM UTC

1 product affected across 1 vendorWordPress

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Severity

MEDIUM5.3

Exploit prediction

EPSS 4%

SSVC

PoC

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WordPress · WordPressdrupal

95%

4.7 ≤ v < 4.7.274.7.0 ≤ v < 4.7.274.8 ≤ v < 4.8.234.8.0 ≤ v < 4.8.234.9 ≤ v < 4.9.244.9.0 ≤ v < 4.9.245.0 ≤ v < 5.0.205.0.0 ≤ v < 5.0.205.1 ≤ v < 5.1.175.2 ≤ v < 5.2.195.2.0 ≤ v < 5.2.195.3 ≤ v < 5.3.165.3.0 ≤ v < 5.3.165.4 ≤ v < 5.4.145.4.0 ≤ v < 5.4.145.5 ≤ v < 5.5.135.5.0 ≤ v < 5.5.135.6 ≤ v < 5.6.125.6.0 ≤ v < 5.6.125.7 ≤ v < 5.7.105.7.0 ≤ v < 5.7.105.8 ≤ v < 5.8.85.8.0 ≤ v < 5.8.85.9 ≤ v < 5.9.85.9.0 ≤ v < 5.9.86.0 ≤ v < 6.0.66.0.0 ≤ v < 6.0.66.1 ≤ v < 6.1.46.1.0 ≤ v < 6.1.46.2 ≤ v < 6.2.36.2.0 ≤ v < 6.2.36.3 ≤ v < 6.3.26.3.0 ≤ v < 6.3.24.7.0 4.8.0 4.9.0 5.0.0 5.2.0 5.3.0 5.4.0 5.5.0 5.6.0 5.7.0 5.8.0 5.9.0 6.0.0 6.1.0 6.2.0 6.3.0

Affected range stops below 4.7.27, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.8.23, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.9.24, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.20, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.17, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.5.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.6.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.7.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.8.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.9.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.3.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2023/11/msg00014.html

Technical DescriptionExploitThird Party Advisory

Source: [email protected]

https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/

ExploitVDB EntryTechnical DescriptionThird Party Advisory

Source: [email protected]

https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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