Security readout for executives and security teams
Plain-English summary
WP Plugin Lister for WordPress through 2.1.0 can let an attacker abuse a logged-in administrator’s browser to save malicious script into plugin settings. The business risk is targeted compromise of WordPress admin sessions or site visitors who view affected admin-controlled output.
Executive priority
Treat as a medium-priority WordPress exposure. It is not shown as actively exploited in the provided sources, but stored XSS in an admin context can support account compromise, defacement, or follow-on abuse if administrators are targeted.
Technical view
The issue combines missing CSRF checks with missing sanitization and escaping. A remote attacker can induce an authenticated administrator to submit a settings update that stores cross-site scripting content. The CVE maps to CWE-352 and CWE-79 with CVSS 3.1 score 5.4.
Likely exposure
Exposure is limited to WordPress sites running WP Plugin Lister through version 2.1.0, especially where administrators browse while logged in. The source bundle does not identify affected CPEs or vendor ownership beyond the plugin name.
Exploitation context
The WPScan reference is tagged as exploit, but the bundle does not show CISA KEV listing or active exploitation evidence. Practical abuse requires administrator interaction through CSRF, then stored script execution in the affected plugin context.
Researcher notes
Evidence supports a CSRF-to-stored-XSS settings update flaw in WP Plugin Lister through 2.1.0. The public bundle does not name a fixed version, affected CPEs, or active exploitation. Avoid assuming remediation beyond vendor guidance, upgrade, disablement, or removal.
Mitigation direction
- Inventory WordPress sites for WP Plugin Lister installations and versions.
- Upgrade if vendor or WordPress plugin guidance identifies a fixed release.
- Disable or remove the plugin if no fixed version is available.
- Review plugin settings for unexpected or script-like content.
- Limit admin browsing from logged-in WordPress sessions.
Validation and detection
- Confirm whether WP Plugin Lister is installed and at or below 2.1.0.
- Check administrative plugin settings for unauthorized changes.
- Review WordPress admin activity logs around plugin settings updates.
- Verify vendor guidance before marking remediation complete.
- Confirm no affected plugin remains enabled on production sites.
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-352: 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 lookupCWE-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-2023-6503 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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:N/UI:R/S:U/C:L/I:L/A:N2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/0d95de23-e8f6-4342-b19c-57cd22b2fee2/CVE reference · exploit, vdb-entry
- https://magos-securitas.com/txt/CVE-2023-6503.txtCVE reference
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.