Skip to content

← Public intelligence

Maven package

org.apache.httpcomponents.client5:httpclient5

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

3 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 5.3MavenAmendedPublished

    Apache HttpComponents Client: Connection Leak on Content-Encoding Decode Error Leads to Pool Exhaustion DoS

    CVE-2026-64607 · GHSA-hjcp-jmpx-g3qm

    Affected
    • Maven org.apache.httpcomponents.client5:httpclient5 >= 5.0-alpha1, < 5.6.3
    Fixed in
    5.6.3· Vendor fix available
    Issue
    HttpClient based on the classic i/o model fails to correctly release the underlying connection back to the connection manager if it encounters an invalid or unsupported Content-Encoding header value in the response message. Please note this defect does not affect HttpClient based on the async i/o model. This issue affects Apache HttpComponents Client: from 5.0-alpha1 through 5.6.2.

    Recommended action: Upgrade to 5.6.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →
  2. High, CVSS 7.3MavenPublished

    Apache HttpClient accepts SCRAM-SHA-256 authentication without proper mutual authentication verification

    CVE-2026-40542 · GHSA-v468-qcjx-r72w

    Affected
    • Maven org.apache.httpcomponents.client5:httpclient5 >= 5.6-alpha1, < 5.6.1
    Fixed in
    5.6.1· Vendor fix available
    Issue
    Missing critical step in authentication in Apache HttpClient 5.6 allows an attacker to cause the client to accept SCRAM-SHA-256 authentication without proper mutual authentication verification. Users are recommended to upgrade to version 5.6.1, which fixes this issue.

    Recommended action: Upgrade to 5.6.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  3. High, CVSS 7.5MavenPublished

    Apache HttpClient disables domain checks

    CVE-2025-27820 · GHSA-73m2-qfq3-56cx

    Affected
    • Maven org.apache.httpcomponents.client5:httpclient5 >= 5.4-alpha1, < 5.4.3
    Fixed in
    5.4.3· Vendor fix available
    Issue
    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.

    Recommended action: Upgrade to 5.4.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →