Security readout for executives and security teams
Plain-English summary
A WordPress site using WPXPO PostX through version 4.1.15 may allow a privileged user to store malicious script content that later runs in another user’s browser. Business impact is usually contained, but it can affect site integrity, user trust, and administrative sessions.
Executive priority
Treat this as a moderate-priority WordPress plugin risk. Prioritize sites with multiple authors, contractors, or delegated administrators, especially where WordPress admin accounts access sensitive operational systems.
Technical view
CVE-2024-50513 is a stored XSS issue in the PostX WordPress plugin package ultimate-post, attributed to improper input neutralization during page generation. CVSS 3.1 is 5.9: network reachable, low complexity, high privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress deployments running WPXPO PostX, also identified as ultimate-post, at version 4.1.15 or earlier. The source bundle does not identify other affected products or a confirmed fixed version.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not marked as CISA KEV. The CVSS vector indicates an attacker needs high privileges and a victim interaction, which lowers broad internet-scale risk but still matters on multi-author or delegated-admin sites.
Researcher notes
Evidence supports stored XSS in PostX through 4.1.15 with CWE-79 and CVSS 5.9. The bundle does not include exploit details, proof of active exploitation, or a definitive fixed version, so remediation should be anchored to vendor or Patchstack updates.
Mitigation direction
- Inventory WordPress sites for the PostX or ultimate-post plugin.
- Check vendor or Patchstack guidance for the corrected release.
- Update PostX if a fixed version is available from trusted sources.
- Disable the plugin where updates are unavailable and business impact permits.
- Restrict high-privileged WordPress access to trusted accounts only.
- Review recent privileged content changes for suspicious script-like content.
Validation and detection
- Confirm whether PostX or ultimate-post is installed on each WordPress site.
- Record the installed plugin version and compare it with 4.1.15.
- Review who has high-privilege content or plugin access.
- Check whether vendor guidance names a fixed version or workaround.
- Inspect security logs for unusual privileged content edits.
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-2024-50513 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.
SSVC decision data
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:L1.73.7PatchstackVulnerability 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
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.
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.