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CVE-2023-0558

31
FAUCET Score

CVE-2023-0558 is a critical authorization bypass vulnerability affecting the ContentStudio plugin for WordPress, versions up to and including 1.2.5. This flaw, stemming from an unsecure token check susceptible to type juggling, allows unauthenticated attackers to execute functions typically reserved for users with valid API keys. With a CVSS score of 9.8 (CRITICAL), it presents a high risk of complete compromise (confidentiality, integrity, availability) due to its network-based attack vector and low attack complexity. While there is no known active exploitation, publicly available exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered some community discussion, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.6CPE matchmatch criteria
cpe:2.3:a:contentstudio:contentstudio:*:*:*:*:*:wordpress:*:*
>= 0, <= 1.2.5CPE match
cpe:2.3:a:contentstudio:contentstudio:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 40th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/contentstudio/trunk/contentstudio-plugin.php
ExploitRelease NotesThird Party Advisory
wordfence.com / threat-intel/vulnerabilities/id/c31828dc-ef94-4895-8395-a5d52a0a82bd
Third Party Advisory