Security readout for executives and security teams
Plain-English summary
Fast WP Speed for WordPress has an unauthenticated reflected XSS issue in versions up to 1.0.0. An attacker could lure a user to a crafted request that runs script in the user’s browser. Business impact is mainly account or session abuse, content manipulation, or phishing risk, depending on who clicks.
Executive priority
Treat as high priority for WordPress estates using this plugin, especially public sites with administrator traffic. It is not currently KEV-backed in the provided bundle, so urgency should be exposure-driven rather than active-exploitation-driven.
Technical view
CVE-2023-45770 is CWE-79 reflected XSS in the Fastwpspeed Fast WP Speed plugin <=1.0.0. The CVSS 3.1 vector is network-accessible, low complexity, no privileges required, user interaction required, and scope changed, with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites with the Fast WP Speed plugin installed at version 1.0.0 or earlier. The source bundle does not identify affected hosting platforms, themes, or dependent products.
Exploitation context
The bundle does not show CISA KEV listing or cite active exploitation. Exploitation still requires a victim action, such as interacting with attacker-controlled content, because the CVSS vector includes user interaction required.
Researcher notes
The evidence identifies unauthenticated reflected XSS but does not include the vulnerable parameter, patch version, proof of exploitation, or exploit prevalence. Avoid assuming broader Fastwpspeed product impact beyond Fast WP Speed <=1.0.0.
Mitigation direction
- Inventory WordPress sites for the Fast WP Speed plugin and version.
- Remove or disable the plugin if it is not required.
- Check vendor or Patchstack guidance for a fixed release or recommended remediation.
- Prioritize admin-facing sites and sites with privileged WordPress users.
Validation and detection
- Confirm whether fast-wp-speed is installed on each WordPress instance.
- Record installed plugin versions and compare against <=1.0.0 exposure.
- Review WAF, web, and application logs for suspicious reflected XSS patterns.
- Verify remediation by confirming the plugin is removed, disabled, or vendor-remediated.
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-2023-45770 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
- High
- CVSS
- 7.1 (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: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:N/UI:R/S:C/C:L/I:L/A:L2.83.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/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.
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.