Security readout for executives and security teams
Plain-English summary
A WordPress site using Login by Auth0 through version 4.6.0 can reflect unsafe script content through the wle parameter. An attacker would need to lure a user into clicking a crafted link. Successful execution could affect the victim’s browser session on that site, but sources do not show active exploitation.
Executive priority
Treat this as a moderate web application risk. It needs timely remediation on affected WordPress sites, especially where administrators or privileged users may follow links while authenticated. It is less urgent than a server-side takeover bug because user interaction is required and no active exploitation is cited.
Technical view
CVE-2023-6813 is reflected XSS in Login by Auth0 for WordPress, caused by insufficient sanitization and output escaping of the wle parameter. It is CWE-79 with CVSS 3.1 score 6.1: network reachable, low complexity, unauthenticated, user interaction required, changed scope, low confidentiality and integrity impact.
Likely exposure
Public WordPress sites running the Login by Auth0 plugin in any version up to and including 4.6.0 are the relevant exposure. Sites without this plugin, or running a vendor-confirmed fixed version, are not indicated as affected by the provided sources.
Exploitation context
The source bundle does not report KEV listing or active exploitation. Exploitation requires social engineering: the attacker must get a user to take an action such as opening a malicious link. Impact is browser-side script execution, not direct server compromise based on the cited description.
Researcher notes
The key evidence is reflected XSS through wle in Login by Auth0 <=4.6.0. The CVSS vector supports moderate severity due to no authentication and low complexity, offset by required user interaction and no availability impact. The provided data does not establish exploit-in-the-wild activity or a specific fixed release.
Mitigation direction
- Inventory WordPress sites for the Login by Auth0 plugin and version.
- Update to a vendor-confirmed fixed version if available.
- If no fixed version is approved, consider disabling the plugin temporarily.
- Review vendor and WordPress plugin guidance before production changes.
- Use web filtering or WAF controls to reduce suspicious parameter abuse.
Validation and detection
- Confirm whether Login by Auth0 is installed on each WordPress site.
- Verify installed versions are not 4.6.0 or older.
- Review access logs for unusual requests containing the wle parameter.
- Test remediation in staging without using live exploit payloads.
- Confirm the affected parameter is sanitized and escaped after remediation.
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-2023-6813 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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.