CVE-2023-0558 json
ContentStudio <= 1.2.5 - Authorization Bypass
published 2023-01-27 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12603
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to an unsecure token check that is susceptible to type juggling in versions up to, and including, 1.2.5. This makes it possible for unauthenticated attackers to execute functions intended for use by users with proper API keys.
Patch / fix
- contentstudio contentstudio 1.2.6
Exploit prediction
0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/contentstudio/trunk/contentstudio-plugin.php#L416 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- contentstudio ContentStudio
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
- Technology feeds
References
-
plugins.trac.wordpress.org
/browser/contentstudio/trunk/contentstudio-plugin.php#L416
exploit, release-notes, third-party-advisory
-
wordfence.com
/threat-intel/vulnerabilities/id/c31828dc-ef94-4895-8395-a5d52a0a82bd?source=cve
third-party-advisory
Sources
- CVE List CVE-2023-0558
- NVD CVE-2023-0558
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.