CVE-2026-23819

High

Published: 12 May 2026

Published

12 May 2026

Modified

13 May 2026

KEV Added

—

Patch

—

CVSS Score v3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Score 0.0027 18.6th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-23819 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Hpe (inferred from references). Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Browser Session Hijacking (T1185); ranked at the 18.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-29734

Vulnerability details

A vulnerability in the web-based management interface of Access Points running AOS-10 and AOS-8 Instant could allow an unauthenticated remote attacker to execute arbitrary JavaScript code in a victim's browser within the same local network. Successful exploitation could allow an…

attacker to compromise user data and potentially manipulate device configuration settings.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1185 Browser Session Hijacking Collection

Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.

attack.mitre.org →

Why these techniques?

XSS (CWE-79) in web management interface directly enables browser script execution for session hijacking or config manipulation.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0