CVE-2026-48497
Last modified
CVE-2026-48497 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. The abnormal process termination is triggered by an invalid runtime precondition that the query name is strictly less than 255 octets, contradicting DNS specification rfc1035#section-2.3.4 that the name can be 255 or less octets. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Envoy | < 1.35.13 |
| Envoyproxy | Envoy | >= 1.36.0, < 1.36.9 |
| Envoyproxy | Envoy | >= 1.37.0, < 1.37.5 |
| Envoyproxy | Envoy | >= 1.38.0, < 1.38.3 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-48497?
How severe is CVE-2026-48497?
How do I fix CVE-2026-48497?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-4849A vulnerability was identified in code-projects Simple Laund…6.1
- CVE-2026-48491Traefik is an HTTP reverse proxy and load balancer. From 3.7…10
- CVE-2026-48492Snipe-IT is an IT asset/license management system. Prior to …6.5
- CVE-2026-48493Snipe-IT is an IT asset/license management system. In versio…5.5
- CVE-2026-48494TypeBot is a chatbot builder tool. In version 3.16.1, an aut…7.1
- CVE-2026-48495TypeBot is a chatbot builder tool. Prior to version 3.17.0, …7.1
- CVE-2026-48499Activepieces is an open source AI workflow automation platfo…9.3
- CVE-2026-4850A security flaw has been discovered in code-projects Simple …9.8
- CVE-2026-48500Filament is a collection of full-stack components for accele…6.5
- CVE-2026-48501GitHub CLI (gh) is GitHub’s official command line tool. Prio…9.1
- CVE-2026-48502MessagePack for C# is a MessagePack serializer for C#. Prior…7.5
- CVE-2026-48504OpenTelemetry Rust is the Rust OpenTelemetry implementation.…5.3
Are you affected by CVE-2026-48497?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST