Security readout for executives and security teams
Plain-English summary
CVE-2023-0557 affects the ContentStudio WordPress plugin through version 1.2.5. An unauthenticated attacker could access sensitive information: a nonce tied to creating posts. The business risk is unauthorized content creation or content workflow abuse on exposed WordPress sites using this plugin.
Executive priority
Prioritize remediation for public WordPress sites using ContentStudio <= 1.2.5, especially sites where unauthorized posts could damage trust, support fraud, or create compliance exposure. If the plugin is unused, removal is the fastest risk reduction.
Technical view
The issue is classified as CWE-200 sensitive information exposure. CVSS 3.1 is 7.5 high: network reachable, low complexity, no privileges, no user interaction, unchanged scope, high integrity impact. Public sources describe exposure of a nonce needed for post creation in ContentStudio <= 1.2.5.
Likely exposure
Exposure is limited to WordPress installations with the ContentStudio plugin installed at version 1.2.5 or earlier. Sites without this plugin, or with non-vulnerable versions, are not indicated as affected by the provided sources.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. The vulnerability is still remotely reachable and unauthenticated, so internet-facing WordPress sites using the affected plugin should treat it as a practical integrity risk.
Researcher notes
The provided evidence supports unauthenticated sensitive information exposure involving a post-creation nonce. It does not provide active exploitation evidence, exploit details, or a clearly named fixed version. Validate remediation against vendor and WordPress plugin repository records before closure.
Mitigation direction
- Inventory WordPress sites for the ContentStudio plugin and record installed versions.
- Update ContentStudio beyond 1.2.5 if a vendor-fixed release is available.
- Disable or remove the plugin where updating is unavailable or business use is unnecessary.
- Check Wordfence, WordPress plugin Trac, and vendor guidance for fixed-version confirmation.
- Review recent posts and authoring activity for unexpected changes.
Validation and detection
- Confirm whether ContentStudio is installed on each WordPress site.
- Verify the installed plugin version is not 1.2.5 or earlier.
- Check public-facing pages for unintended exposure of post-creation nonce data.
- Review WordPress logs for unexpected unauthenticated requests around plugin endpoints.
- Inspect recent post creation or modification history for anomalies.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-0557 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/62eb136f-3cb0-40dc-a154-015a7fa1077b?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/contentstudio/trunk/contentstudio-plugin.php#L709CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2851006%40contentstudio%2Ftrunk&old=2844028%40contentstudio%2Ftrunk&sfp_email=&sfph_mail=CVE reference
- https://www.wordfence.com/threat-intel/vulnerabilities/id/62eb136f-3cb0-40dc-a154-015a7fa1077bCVE reference · x_transferred
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.