CVE-2023-5561
MEDIUMCVSS 5.3/10EPSS 3.86%
Last modified
CVE-2023-5561 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 3.86% chance of exploitation in the next 30 days.
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
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wordpress | Wordpress | >= 4.7, < 4.7.27 |
| Wordpress | Wordpress | >= 4.8, < 4.8.23 |
| Wordpress | Wordpress | >= 4.9, < 4.9.24 |
| Wordpress | Wordpress | >= 5.0, < 5.0.20 |
| Wordpress | Wordpress | >= 5.1, < 5.1.17 |
| Wordpress | Wordpress | >= 5.2, < 5.2.19 |
| Wordpress | Wordpress | >= 5.3, < 5.3.16 |
| Wordpress | Wordpress | >= 5.4, < 5.4.14 |
| Wordpress | Wordpress | >= 5.5, < 5.5.13 |
| Wordpress | Wordpress | >= 5.6, < 5.6.12 |
| Wordpress | Wordpress | >= 5.7, < 5.7.10 |
| Wordpress | Wordpress | >= 5.8, < 5.8.8 |
| Wordpress | Wordpress | >= 5.9, < 5.9.8 |
| Wordpress | Wordpress | >= 6.0, < 6.0.6 |
| Wordpress | Wordpress | >= 6.1, < 6.1.4 |
| Wordpress | Wordpress | >= 6.2, < 6.2.3 |
| Wordpress | Wordpress | >= 6.3, < 6.3.2 |
References
- https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/Exploit, Third Party Advisory
- https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441Third Party Advisory
- https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/Exploit, Third Party Advisory
- https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-5561?
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
How severe is CVE-2023-5561?
CVE-2023-5561 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 3.86% probability of exploitation in the next 30 days.
How do I fix CVE-2023-5561?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2023
- CVE-2023-5555Cross-site Scripting (XSS) - Generic in GitHub repository fr…6.1
- CVE-2023-5556Cross-site Scripting (XSS) - Reflected in GitHub repository …6.1
- CVE-2023-5557A flaw was found in the tracker-miners package. A weakness i…7.7
- CVE-2023-5558The LearnPress WordPress plugin before 4.2.5.5 does not sani…6.1
- CVE-2023-5559The 10Web Booster WordPress plugin before 2.24.18 does not v…9.1
- CVE-2023-5560The WP-UserOnline WordPress plugin before 2.88.3 does not sa…6.1
- CVE-2023-5562An unsafe default configuration in KNIME Analytics Platform …6.1
- CVE-2023-5563The SJA1000 CAN controller driver backend automatically atte…7.5
- CVE-2023-5564Cross-site Scripting (XSS) - Stored in GitHub repository fro…4.8
- CVE-2023-5565The Shortcode Menu plugin for WordPress is vulnerable to Sto…5.4
- CVE-2023-5566The Simple Shortcodes plugin for WordPress is vulnerable to …5.4
- CVE-2023-5567The QR Code Tag plugin for WordPress is vulnerable to Stored…5.4
Are you affected by CVE-2023-5561?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST