CVE-2026-39666 | telepathy Hello Bar Popup Builder Plugin up to 1.5.1 on WordPress cross site scripting

VDB-356199 · CVE-2026-39666 · GCVE-0-2026-39666 TELEPATHY HELLO BAR POPUP BUILDER PLUGIN UP TO 1.5.1 ON WORDPRESS CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.4 $0-$5k 0.62+ Summaryinfo A vulnerability marked as problematic has been reported in telepathy Hello Bar Popup Builder Plugin up to 1.5.1 on WordPress. This affects an unknown function. Performing a manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2026-39666. It is possible to initiate the attack remotely. There is no exploit available. Detailsinfo A vulnerability was found in telepathy Hello Bar Popup Builder Plugin up to 1.5.1 on WordPress. It has been classified as problematic. This affects an unknown code. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in telepathy Hello Bar Popup Builder hellobar allows DOM-Based XSS.This issue affects Hello Bar Popup Builder: from n/a through <= 1.5.1. The weakness was shared by Nabil Irawan. It is possible to read the advisory at patchstack.com. This vulnerability is uniquely identified as CVE-2026-39666 since 04/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type WordPress Plugin Vendor telepathy Name Hello Bar Popup Builder Plugin Version 1.5.0 1.5.1 CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.5 VulDB Meta Temp Score: 3.4 VulDB Base Score: 3.5 VulDB Temp Score: 3.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/07/2026 CVE reserved 04/08/2026 +1 days Advisory disclosed 04/08/2026 +0 days VulDB entry created 04/08/2026 +0 days VulDB entry last update Sourcesinfo Advisory: patchstack.com Researcher: Nabil Irawan Status: Not defined CVE: CVE-2026-39666 (🔒) GCVE (CVE): GCVE-0-2026-39666 GCVE (VulDB): GCVE-100-356199 Entryinfo Created: 04/08/2026 12:55 Changes: 04/08/2026 12:55 (55) Complete: 🔍 Cache ID: 99:C51:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸