Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in the All in One SEO Pack WordPress plugin. A logged-in Contributor-level user could save malicious script content through vulnerable plugin settings. That script could run later when someone views the affected page, potentially affecting site administrators or visitors.
Executive priority
Treat this as a moderate-priority WordPress application risk. It is not listed as known exploited in the provided evidence, but outdated plugin deployments and weak contributor account control can create practical exposure.
Technical view
CVE-2023-0586 affects All in One SEO Pack versions up to and including 4.2.9. Multiple parameters lacked sufficient input sanitization and output escaping, enabling authenticated Contributor+ stored XSS. CVSS 3.1 is 6.4 with low privileges required, changed scope, low confidentiality impact, and low integrity impact.
Likely exposure
Exposure is most likely on WordPress sites running All in One SEO Pack <= 4.2.9, especially multi-author sites or sites where Contributor+ accounts may be compromised or loosely managed.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires authenticated Contributor-level or higher access, but stored XSS can persist and affect later viewers of injected content.
Researcher notes
The key weakness is CWE-79 stored XSS from insufficient sanitization and escaping. The bundle identifies multiple parameters but does not provide complete exploit details. Validate exposure by version and role model rather than assuming unauthenticated reachability.
Mitigation direction
- Inventory WordPress sites for All in One SEO Pack versions <= 4.2.9.
- Update the plugin to a version newer than 4.2.9 following vendor guidance.
- Review and restrict Contributor, Author, Editor, and Administrator accounts.
- Inspect affected content and SEO settings for suspicious script-like entries.
- Monitor vendor and Wordfence guidance for any additional remediation details.
Validation and detection
- Confirm the installed plugin version on every WordPress site.
- Verify no production site remains on All in One SEO Pack <= 4.2.9.
- Review user accounts with Contributor-level or higher permissions.
- Check recent content changes by lower-privileged authenticated users.
- Confirm WordPress security monitoring has not flagged related stored XSS activity.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2023-0586 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
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1c13f00e-3048-44cf-8979-2b0b0c508f3a?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/all-in-one-seo-pack/tags/4.2.9/app/Common/Admin/PostSettings.php?v=2829340#L202CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2859011%40all-in-one-seo-pack%2Ftrunk&old=2847431%40all-in-one-seo-pack%2Ftrunk&sfp_email=&sfph_mail=CVE reference
- https://www.wordfence.com/blog/2023/02/all-in-one-seo-pack-vulnerabilities-impacting-3-million-sites-patched/CVE reference
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1c13f00e-3048-44cf-8979-2b0b0c508f3aCVE 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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.