CVE-2026-32283
Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
Description
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
INFO
Published Date :
April 8, 2026, 2:16 a.m.
Last Modified :
April 16, 2026, 7:12 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Apply vendor-provided patches for TLS 1.3.
- Ensure TLS 1.3 handles key updates correctly.
- Monitor resource consumption on TLS connections.
Public PoC/Exploit Available at Github
CVE-2026-32283 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-32283.
| URL | Resource |
|---|---|
| https://go.dev/cl/763767 | Patch |
| https://go.dev/issue/78334 | Issue Tracking |
| https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU | Release Notes Mailing List |
| https://pkg.go.dev/vuln/GO-2026-4870 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-32283 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-32283
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Deterministic CVE assessment tool for medik8s operators
Dockerfile Go Makefile Shell
All Public RunWhen Helm Charts - Managed by terraform
Shell Dockerfile Go Template
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-32283 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-32283 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-770 Added CPE Configuration OR *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions up to (excluding) 1.25.9 *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions from (including) 1.26.0 up to (excluding) 1.26.2 Added Reference Type Go Project: https://go.dev/cl/763767 Types: Patch Added Reference Type Go Project: https://go.dev/issue/78334 Types: Issue Tracking Added Reference Type Go Project: https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU Types: Mailing List, Release Notes Added Reference Type Go Project: https://pkg.go.dev/vuln/GO-2026-4870 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
New CVE Received by [email protected]
Apr. 08, 2026
Action Type Old Value New Value Added Description If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3. Added Reference https://go.dev/cl/763767 Added Reference https://go.dev/issue/78334 Added Reference https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU Added Reference https://pkg.go.dev/vuln/GO-2026-4870