CVE-2023-39322

Name: CVE-2023-39322
Creator: NVD / NIST
Published: 2023-09-08T17:15:28.12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.14%

Last modified Jun 17, 2026

CVE-2023-39322 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.

Description

QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.14%

62.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Golang	Go	>= 1.21.0, < 1.21.1

References

https://go.dev/cl/523039Patch
https://go.dev/issue/62266Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2023-2045Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0004/Third Party Advisory
https://go.dev/cl/523039Patch
https://go.dev/issue/62266Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2023-2045Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0004/Third Party Advisory

Timeline

Published: Sep 8, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39322?

How severe is CVE-2023-39322?

CVE-2023-39322 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39322?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39322?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST