TI-2023-00527 Aliases CVE-2023-0556 GHSA-h8vw-7x98-j7c4

ContentStudio <= 1.2.5 - Missing Authorization

MEDIUM 51CWE-862Published 2023-01-27 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on several functions in versions up to, and including, 1.2.5. This makes it possible for unauthenticated attackers to obtain the blog metadata (via the function cstu_get_metadata) that includes the plugin's contentstudio_token. Knowing this token allows for other interactions with the plugin such as creating posts in versions prior to 1.2.5, which added other requirements to posting and updating.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00979 62nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
contentstudio	ContentStudio	up to 1.2.5	—	No fix listed	CNA

ContentStudio Vendorcontentstudio Affected up to 1.2.5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:contentstudio:contentstudio::::::wordpress::*	before 1.2.6	Vulnerable	contentstudio

cpe:2.3:a:contentstudio:contentstudio:*:*:*:*:*:wordpress:*:* Versions before 1.2.6 Vulnerable ·contentstudio

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-0556
2026-10-03 Alias added: GHSA-h8vw-7x98-j7c4

References

TI-2023-00529 ContentStudio <= 1.2.5 - Authorization Bypass CVSS 3.1CRITICAL 9.8
TI-2023-00528 ContentStudio <= 1.2.5 - Information Exposure CVSS 3.1HIGH 7.5

Sources

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