# org.apache.httpcomponents.client5:httpclient5 (Maven) vulnerabilities

3 known vulnerabilities (2 high, 1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Dependents: 29
- Registry: https://central.sonatype.com/artifact/org.apache.httpcomponents.client5/httpclient5

## Advisories (3)

### [CVE-2026-64607](https://cve.now/CVE-2026-64607): Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS

- Severity: Medium 5.3
- Published: Jul 31, 2026
- Affected: from 5.0-alpha, through 5.6.2; from 5.0-alpha1, fixed in 5.6.3.

### [CVE-2026-40542](https://cve.now/CVE-2026-40542): Apache HttpClient: SCRAM-SHA-256 mutual authentication bypass may cause the client to accept authentication without proper mutual…

- Severity: High 7.3
- Published: Apr 22, 2026
- Affected: from 5.6, fixed in 5.6.1; from 5.6-alpha1, fixed in 5.6.1.

### [CVE-2025-27820](https://cve.now/CVE-2025-27820): Apache HttpComponents: PSL (Public Suffix List) validation bypass

- Severity: High 7.5
- Published: Apr 24, 2025
- Affected: from 5.4-alpha1, fixed in 5.4.3.

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