Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in the WordPress Modern Footnotes plugin up to version 1.4.15. It requires an authenticated administrator-level actor and user interaction, so it is not a broad unauthenticated takeover path. Risk is mainly to WordPress sites where admin accounts are shared, weakly protected, or already compromised.
Executive priority
Handle in the normal vulnerability remediation cycle unless the affected WordPress site is business-critical or admin accounts are weakly protected. The required admin-level access lowers urgency, but stored XSS can still support account abuse, content manipulation, and trust damage on public sites.
Technical view
CVE-2023-28423 is a CWE-79 stored XSS vulnerability in Prism Tech Studios Modern Footnotes for WordPress, affecting versions <= 1.4.15. The CVSS 3.1 score is 5.9 with network access, low attack complexity, high privileges required, user interaction required, and changed scope with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress installations running the Modern Footnotes plugin at version 1.4.15 or earlier. The source bundle does not identify affected CPEs or a specific fixed version, so asset inventory should verify plugin presence and version directly.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires administrator-level authentication and user interaction. Treat this as a meaningful hardening item, especially where WordPress administrator accounts may be compromised, delegated, or insufficiently monitored.
Researcher notes
Evidence supports authenticated administrator-level stored XSS in Modern Footnotes <= 1.4.15 with CVSS 5.9. The bundle does not include exploit details, public exploitation evidence, or a named fixed version. Validation should focus on plugin inventory, version status, admin-account exposure, and vendor advisory tracking.
Mitigation direction
- Inventory WordPress sites for the Modern Footnotes plugin and installed version.
- Check Patchstack and vendor guidance for a fixed release or official remediation.
- Upgrade if a fixed version is available from trusted vendor channels.
- Disable or remove the plugin if no safe update is available.
- Restrict administrator access and enforce strong MFA for WordPress admins.
- Review recent administrator content changes for suspicious stored script behavior.
Validation and detection
- Confirm whether each WordPress site has Modern Footnotes installed.
- Record plugin versions and flag 1.4.15 or earlier as vulnerable.
- Verify administrator accounts are current, expected, and MFA-protected.
- Confirm the plugin is upgraded, disabled, or removed after remediation.
- Review logs or content history for unexpected administrator-originated changes.
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-2023-28423 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Source materials
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.