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CVE-2026-54345

7.5 · HIGH

gopacket provides packet processing capabilities for Go.

Published Jul 28, 2026CWE-191EPSS 0.79%

Overview

CVE-2026-54345 is a high-severity vulnerability. It was published on July 28, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/gopacket/gopacket/commit/145859d0eaee1a6f5925ffb93851c976449c3311GitHubgithub.com/gopacket/gopacket/releases/tag/v1.6.1GitHubgithub.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5GitHubgithub.com/gopacket/gopacket/security/advisories/GHSA-6r28-9ppf-4hj5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-54345?

CVE-2026-54345 is a high-severity vulnerability. It was published on July 28, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-54345?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-54345?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-54345?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-54345 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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