Security readout for executives and security teams
Plain-English summary
CVE-2026-25453 is a medium-severity cross-site scripting issue in the WordPress Advanced iFrame plugin through version 2025.10. Successful abuse could let an attacker run unwanted script in a user’s browser, with limited confidentiality, integrity, and availability impact. The available sources do not indicate active exploitation.
Executive priority
Treat this as a routine but time-sensitive WordPress plugin issue. Prioritize internet-facing sites, sites with many contributors, and sites processing sensitive user sessions. There is no sourced evidence of active exploitation, but XSS in WordPress plugins can affect trust and user data.
Technical view
The CVE describes DOM-based XSS caused by improper neutralization of input during web page generation in mdempfle Advanced iFrame, package slug advanced-iframe. CVSS 3.1 is 6.5: network exploitable, low complexity, low privileges required, user interaction required, scope changed, and low C/I/A impact.
Likely exposure
Exposure is most likely on WordPress sites using Advanced iFrame versions through 2025.10. Risk is higher where untrusted or lower-privileged users can influence plugin-related content or settings and where administrators or visitors can be induced to interact with affected pages.
Exploitation context
The CVSS vector indicates exploitation requires network access, low privileges, and user interaction. CISA KEV status is false in the provided bundle, and no cited source states active exploitation. Public evidence is limited to the CVE record and Patchstack advisory entry.
Researcher notes
Evidence is incomplete. The CVE description identifies versions through 2025.10, while structured affected metadata is sparse and lacks CPEs. No patch version or workaround is named in the provided sources. Avoid assuming exploit availability or remediation beyond vendor/Patchstack guidance.
Mitigation direction
- Inventory WordPress sites for the Advanced iFrame plugin and installed version.
- If version is 2025.10 or earlier, check vendor or Patchstack guidance for a fixed release.
- Restrict plugin administration to trusted users until remediation is confirmed.
- Review pages using the plugin for untrusted or user-controlled input.
Validation and detection
- Confirm whether the advanced-iframe plugin is installed on each WordPress site.
- Record the installed plugin version and compare it to 2025.10 or earlier.
- Review vendor, WordPress plugin, or Patchstack pages for remediation status.
- Check logs and content changes for suspicious script injection indicators.
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-2026-25453 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/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.