Description
Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache HttpComponents Core | 5.5-alpha – ≤ 5.5-beta1, 5.0-alpha – ≤ 5.4.2 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | httpcomponents-core | No fix yet | — |
| Debian 14 | httpcomponents-core5 | 5.4.3-1 | — |
| Debian 13 | httpcomponents-core +1 | No fix yet | — |
| Debian 12 | httpcomponents-core +1 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | httpcomponents-core +1 | No fix yet | — |
| Ubuntu 26.04 LTS | httpcomponents-core +1 | No fix yet | — |
| Ubuntu 25.10 | httpcomponents-core +1 | No fix yet | — |
| Ubuntu 24.04 LTS | httpcomponents-core +1 | No fix yet | — |
| Ubuntu 22.04 LTS | httpcomponents-core +1 | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | httpcomponents-core | No fix yet | — |
| Ubuntu 18.04 LTS | httpcomponents-core | No fix yet | — |
| Ubuntu 16.04 LTS | httpcomponents-core | No fix yet | — |
| Ubuntu 14.04 LTS | httpcomponents-core | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | httpcomponents-core +1 | 4.4.13-6.amzn2023.0.4 | ALAS2023-2026-1948 |
| Amazon Linux 2023 | javapackages-bootstrap | 1.5.0^20220105.git9f283b7-3.amzn2023.0.10 | ALAS2023-2026-2055 |
| Amazon Linux 2 | httpcomponents-core +1 | 4.2.4-6.amzn2.0.1 | ALAS2-2026-3807 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | akhq | 0.28.0-r3 | — |
| Wolfi rolling | apicurio-registry | 3.3.1-r4 | — |
| Wolfi rolling | cassandra-reaper | 5.0.0-r6 | — |
| Wolfi rolling | druid | 37.0.0-r49 | — |
| Wolfi rolling | flyway | 13.7.0-r1 | — |
| Wolfi rolling | kserve-modelmesh | 0.12.0-r39 | — |
| Wolfi rolling | logstash-9.3 +1 | 9.3.8-r2 | — |
| Wolfi rolling | logstash-9.4 +1 | 9.4.5-r1 | — |
| Wolfi rolling | maven-3.9 | No fix yet | — |
| Wolfi rolling | nrjmx | 2.13.0-r1 | — |
| Wolfi rolling | opensearch-3 +8 | 3.7.0-r14 | — |
| Wolfi rolling | opensearch-3-discovery-ec2 +2 | 3.8.0-r3 | — |
| Wolfi rolling | sonarqube | 26.8.0.126808-r1 | — |
| Wolfi rolling | thingsboard-tb-node +1 | 4.3.1.3-r17 | — |
| Wolfi rolling | trino-plugin-clickhouse | 484-r0 | — |
| Wolfi rolling | wavefront-proxy | 13.9-r28 | — |
| Wolfi rolling | zipkin +1 | 3.6.1-r25 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.httpcomponents.core5:httpcore5 | < 5.4.3 | 5.4.3 | GHSA-hf6x-8p5f-cgmf |
| Maven | org.apache.httpcomponents.core5:httpcore5 | >= 5.5-alpha1, < 5.5-beta2 | 5.5-beta2 | GHSA-hf6x-8p5f-cgmf |
Advisories 9
- WID-SEC-2026-4090 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- WID-SEC-2026-4056 Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- WID-SEC-2026-2172 Apache HttpComponents Core: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 9, 2026
- NCSC-2026-0448 Kwetsbaarheden verholpen in Oracle Fusion Middleware NCSC-NL (Netherlands) · Oct 22, 2026
- WID-SEC-2026-4078 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 20, 2026
- WID-SEC-2026-4061 Oracle Database Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 20, 2026
- ALAS2023-2026-2055 Important: javapackages-bootstrap security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 17, 2026
- ALAS2-2026-3807 Important: httpcomponents-core security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 20, 2026
- ALAS2023-2026-1948 Important: httpcomponents-core security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 20, 2026
References
- https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy vendor-advisory