Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-11564

9.1 · CRITICAL

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup.

Published Jul 3, 2026CWE-295EPSS 0.43%

Overview

CVE-2026-11564 is a critical-severity vulnerability. It was published on July 3, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

libcurl keeps previously used connections in a connection pool for subsequent

transfers to reuse if one of them matches the setup.

An easy handle that first uses default native CA trust can continue trusting

the native platform store after the application switches that same handle to

custom CA material for a later transfer.

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

Refcurl.se/docs/CVE-2026-11564.htmlRefcurl.se/docs/CVE-2026-11564.jsonRefhackerone.com/reports/3788984Refhackerone.com/reports/3788984

How CyberStrike helps

Frequently asked questions

What is CVE-2026-11564?

CVE-2026-11564 is a critical-severity vulnerability. It was published on July 3, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-11564?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-11564?

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-2026-11564?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-11564 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.

Related CRITICAL CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999