Security readout for executives and security teams
Plain-English summary
A WordPress plugin used to collect applications can reflect attacker-controlled script into a user’s browser. Successful abuse requires a victim to open a crafted link or page, but no login is required. The business risk is account/session misuse, data exposure, or website trust damage on sites using affected plugin versions.
Executive priority
Prioritize remediation for public WordPress sites using this plugin, especially sites handling applicants or customer submissions. The issue is not confirmed as actively exploited in the provided evidence, but unauthenticated reflected XSS on public pages warrants prompt action.
Technical view
CVE-2023-45756 is an unauthenticated reflected XSS issue in Spider Teams ApplyOnline – Application Form Builder and Manager for WordPress, described for versions <= 2.5.2. It is CWE-79 with CVSS 3.1 score 7.1: network reachable, low complexity, no privileges, user interaction required, and changed scope.
Likely exposure
Public WordPress sites running the ApplyOnline plugin package apply-online at version 2.5.2 or earlier are the relevant exposure. Sites without this plugin, or with versions outside the affected range, are not shown as affected by the provided sources.
Exploitation context
The bundle does not show CISA KEV listing or cite active exploitation. Exploitation would require user interaction, consistent with reflected XSS. Treat internet-facing forms and application pages as higher priority because they are reachable by unauthenticated users.
Researcher notes
Evidence is limited to the CVE and Patchstack vulnerability record. The bundle does not provide a fixed version, proof of exploitation, or vulnerable parameter details. Avoid assuming exploit maturity; focus validation on asset inventory, plugin versioning, and vendor-confirmed remediation.
Mitigation direction
- Inventory WordPress sites for the ApplyOnline plugin package apply-online.
- If version is <= 2.5.2, check vendor or Patchstack guidance for a fixed release.
- Update the plugin if a supported fixed version is available.
- Disable or remove the plugin where it is unused or cannot be safely updated.
- Use compensating controls such as WAF rules while awaiting vendor guidance.
Validation and detection
- Confirm whether ApplyOnline is installed on each WordPress property.
- Record the installed plugin version and compare it with <= 2.5.2.
- Review vendor, CVE, and Patchstack records for remediation status.
- After changes, verify affected public pages still function normally.
- Review web logs for suspicious XSS-like requests to application form routes.
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-2023-45756 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.