CVE-2023-5561

WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure

At a glance

Severity: MEDIUM 5.3
EPSS: EPSS 4.33 % · percentile 91 (2026-10-27)
State: PUBLISHED
Published: 2023-10-16
Updated: 2025-04-23
Assigner: WPScan
NVD status: Modified

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

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP
CVSS 3.1	MEDIUM 5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	NVD · nvd@nist.gov (Primary)
CVSS 3.1	MEDIUM 5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

ENISA EUVD · EUVD-2023-57861
GCVE · GCVE-0-2023-5561

Affected configurations (NVD CPE)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 4.7 < 4.7.27
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 4.8 < 4.8.23
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 4.9 < 4.9.24
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.0 < 5.0.20
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.1 < 5.1.17
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.2 < 5.2.19
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.3 < 5.3.16
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.4 < 5.4.14
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.5 < 5.5.13
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.6 < 5.6.12
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.7 < 5.7.10
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.8 < 5.8.8
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 5.9 < 5.9.8
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 6.0 < 6.0.6
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 6.1 < 6.1.4
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 6.2 < 6.2.3
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* ≥ 6.3 < 6.3.2

Affected products

Product	Versions
WordPress · WordPress	affected 6.3.0 < 6.3.2 ; affected 6.2.0 < 6.2.3 ; affected 6.1.0 < 6.1.4 ; affected 6.0.0 < 6.0.6 ; affected 5.9.0 < 5.9.8 ; affected 5.8.0 < 5.8.8

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD