CVE-2026-66257

HighCVSS 7.5/10Last modified Oct 24, 2026

Description

A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service.

This issue affects Apache Qpid Proton-J: through 0.34.1.

Users are recommended to upgrade to version 0.35.0, which fixes the issue.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

No affected versions have been published.

Timeline

Published
Aug 5, 2026
Last modified
Oct 24, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-66266.3A vulnerability was detected in Cockpit-HQ Cockpit up to 2.13.5. Affected by this issue is some unknown functionality of the component AssetCVE-2026-662697.5Dell OpenManage Server Administrator, versions prior to 11.1.0.3, contains a Use of Externally-Controlled Input to Select Classes or Code ('CVE-2026-66278.2The WPFormify – Stripe Payments with Form and Checkout plugin for WordPress is vulnerable to unauthorized modification and deletion of StripCVE-2026-662707.2Dell Wyse Management Suite (WMS), versions prior to 2605.0.2, contain an Unrestricted Upload of File with Dangerous Type vulnerability. A hiCVE-2026-662717.2Dell Wyse Management Suite (WMS), versions prior to 2605.0.2, contain an Unrestricted Upload of File with Dangerous Type vulnerability. A hiCVE-2026-662725.3Dell Wyse Management Suite (WMS), versions prior to 2605.0.2, contain a Missing Authentication for Critical Function vulnerability. An unautCVE-2026-662737.5A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. CVE-2026-662747.5A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service. This issuCVE-2026-662756.5An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. This issue affectCVE-2026-662766.5An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handlingCVE-2026-662776.5It was not possible to govern the maximum number of transfer frames per incoming delivery, enabling an authenticated attacker to cause excesCVE-2026-662797.2In Connect SDK 4.3.1 and earlier and Flex SDK 3.7.7 and earlier, a message with invalid security settings may bypass authentication resultin
CVE-2026-66257: High severity, CVSS 7.5 | Vulnix