CVE-2026-5506: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in lucascaro Wavr
The Wavr WordPress plugin up to version 0. 2. 6 contains a stored cross-site scripting (XSS) vulnerability in its 'wave' shortcode. This vulnerability arises from insufficient sanitization and escaping of user-supplied attributes, allowing authenticated users with contributor-level access or higher to inject malicious scripts. These scripts execute whenever any user views the affected page. The vulnerability has a CVSS 3. 1 base score of 6. 4, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-5506 is a stored cross-site scripting vulnerability in the Wavr plugin for WordPress, affecting all versions up to 0.2.6. The issue is due to improper neutralization of input during web page generation, specifically in the 'wave' shortcode, where user-supplied attributes are not properly sanitized or escaped. This allows authenticated users with contributor-level permissions or higher to inject arbitrary JavaScript code that executes in the context of any user viewing the compromised page. The vulnerability has a CVSS 3.1 score of 6.4, reflecting a medium severity with network attack vector, low attack complexity, and no user interaction required.
Potential Impact
An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who visit the affected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not impact availability. There are no reports of active exploitation in the wild.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor's advisory channels for updates. As a temporary mitigation, restrict contributor-level access to trusted users only and consider disabling or removing the Wavr plugin until a fix is released.
CVE-2026-5506: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in lucascaro Wavr
Description
The Wavr WordPress plugin up to version 0. 2. 6 contains a stored cross-site scripting (XSS) vulnerability in its 'wave' shortcode. This vulnerability arises from insufficient sanitization and escaping of user-supplied attributes, allowing authenticated users with contributor-level access or higher to inject malicious scripts. These scripts execute whenever any user views the affected page. The vulnerability has a CVSS 3. 1 base score of 6. 4, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5506 is a stored cross-site scripting vulnerability in the Wavr plugin for WordPress, affecting all versions up to 0.2.6. The issue is due to improper neutralization of input during web page generation, specifically in the 'wave' shortcode, where user-supplied attributes are not properly sanitized or escaped. This allows authenticated users with contributor-level permissions or higher to inject arbitrary JavaScript code that executes in the context of any user viewing the compromised page. The vulnerability has a CVSS 3.1 score of 6.4, reflecting a medium severity with network attack vector, low attack complexity, and no user interaction required.
Potential Impact
An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who visit the affected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not impact availability. There are no reports of active exploitation in the wild.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor's advisory channels for updates. As a temporary mitigation, restrict contributor-level access to trusted users only and consider disabling or removing the Wavr plugin until a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-03T16:32:34.231Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5fe4e1cc7ad14da373a58
Added to database: 4/8/2026, 7:05:50 AM
Last enriched: 4/15/2026, 1:51:34 PM
Last updated: 5/23/2026, 11:00:52 PM
Views: 71
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.