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CVE-2026-78161

7.3 · HIGH

A vulnerability was found in warmcat libwebsockets 4.5.0.

Published Aug 24, 2026CWE-119EPSS 0.40%

Overview

CVE-2026-78161 is a high-severity vulnerability. It was published on August 24, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability was found in warmcat libwebsockets 4.5.0. Impacted is the function report_raw_cbor of the file lib/misc/lecp.c of the component LECP CBOR Recording. The manipulation results in out-of-bounds write. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as 1d44554a1bb262db63ff4e240152a9deecd99054. It is best practice to apply a patch to resolve this issue.

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/biniamf/pocs/blob/main/libwebsockets-lecp-lecp_parse-cbor_pos_oob_write/poc_lecp_cbor_pos_oob.cGitHubgithub.com/biniamf/pocs/tree/main/libwebsockets-lecp-lecp_parse-cbor_pos_oob_writeGitHubgithub.com/warmcat/libwebsockets/GitHubgithub.com/warmcat/libwebsockets/commit/1d44554a1bb262db63ff4e240152a9deecd99054Refvuldb.com/cve/CVE-2026-78161Refvuldb.com/submit/883225Refvuldb.com/vuln/394543Refvuldb.com/vuln/394543/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-78161?

CVE-2026-78161 is a high-severity vulnerability. It was published on August 24, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-78161?

This vulnerability has a CVSS 3.1 base score of 7.3, 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-2026-78161?

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-2026-78161?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-78161 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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