Description
A bug in PSL validation logic in Apache HttpClient 5.4.x disables domain checks, affecting cookie management and host name verification. Discovered by the Apache HttpClient team. Fixed in the 5.4.3 release
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache HttpComponents | 5.4.0 – < 5.4.3 | 5.4.3 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | httpcomponents-client | No fix yet | — |
| Ubuntu 26.04 LTS | httpcomponents-client | No fix yet | — |
| Ubuntu 25.10 | httpcomponents-client | No fix yet | — |
| Ubuntu 24.04 LTS | httpcomponents-client | No fix yet | — |
| Ubuntu 22.04 LTS | httpcomponents-client | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | httpcomponents-client | No fix yet | — |
| Ubuntu Pro 18.04 LTS | httpcomponents-client | No fix yet | — |
| Ubuntu Pro 16.04 LTS | httpcomponents-client | No fix yet | — |
| Ubuntu Pro 14.04 LTS | httpcomponents-client | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | opensearch-2 | 2.19.4-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.httpcomponents.client5:httpclient5 | >= 5.4-alpha1, < 5.4.3 | 5.4.3 | GHSA-73m2-qfq3-56cx |
Advisories 3
- WID-SEC-2026-0351 Dell NetWorker (Third Party Components): Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 31, 2026
- WID-SEC-2026-1204 Oracle Financial Services Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 21, 2026
- WID-SEC-2025-1579 Atlassian Bamboo Data Center und Server: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Oct 5, 2025