Security readout for executives and security teams
Plain-English summary
CVE-2026-1825 affects the WordPress “Show YouTube video” plugin through version 1.1. A logged-in user with Contributor-level access or higher can store script content in a shortcode attribute, causing it to run when others view the page. This is not listed as actively exploited in KEV.
Executive priority
Treat as a targeted website integrity and user-risk issue, not an emergency wormable flaw. Prioritize sites with many content contributors, public registration, or sensitive administrator sessions.
Technical view
The issue is stored cross-site scripting in the plugin’s 'syv' shortcode 'id' attribute, caused by insufficient sanitization and output escaping. CVSS 3.1 is 6.4, with low-privileged authenticated access required and changed scope. Public references point to plugin code locations in version 1.1.
Likely exposure
Exposure is limited to WordPress sites running Show YouTube video version 1.1 or earlier, especially where Contributor or higher accounts are available to untrusted users.
Exploitation context
An attacker needs authenticated WordPress access at Contributor level or above. Successful abuse could affect site visitors or administrators who view injected content. The provided sources do not show active exploitation.
Researcher notes
The source bundle states versions up to and including 1.1 are vulnerable, while the affected metadata appears inconsistent. Validate against Wordfence and plugin repository evidence before broad asset tagging. No patch version is identified in the provided sources.
Mitigation direction
- Check vendor or WordPress plugin guidance for a fixed version or advisory.
- If no fix is available, consider disabling the plugin until remediated.
- Restrict Contributor and higher roles to trusted users only.
- Review content workflows for shortcode use by lower-privileged authors.
Validation and detection
- Inventory WordPress sites for the Show YouTube video plugin.
- Confirm whether installed versions are 1.1 or earlier.
- Search posts and pages for 'syv' shortcode usage.
- Review Contributor, Author, Editor, and Administrator account assignments.
- Monitor WordPress security logs for suspicious content changes.
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
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ATT&CK lookup starting points
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CWE-79: User-session and phishing behavior lookup
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Open ATT&CK lookupCVE-2026-1825 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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.