Vulnerability-Lookup

GHSA-V468-QCJX-R72W

Vulnerability from github – Published: 2026-04-22 09:31 – Updated: 2026-04-22 18:31

Details

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.

Severity ?

7.3 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40542"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-304"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T08:16:12Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-v468-qcjx-r72w",
  "modified": "2026-04-22T18:31:43Z",
  "published": "2026-04-22T09:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40542"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/22/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-40542 (GCVE-0-2026-40542)

Vulnerability from cvelistv5 – Published: 2026-04-22 07:07 – Updated: 2026-04-22 16:23

Title

Apache HttpClient: SCRAM-SHA-256 mutual authentication bypass may cause the client to accept authentication without proper mutual authentication verification

Summary

Severity ?

No CVSS data available.

CWE

CWE-304 - Missing Critical Step in Authentication

Assigner

apache

References

URL

Tags

https://lists.apache.org/thread/tfmgv86xr0z1y096v…

vendor-advisory

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache HttpClient	Affected: 5.6 , < 5.6.1 (semver)

Credits

Rasmus Moorats

Show details on NVD website

JSON

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              "baseSeverity": "HIGH",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
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                "role": "CISA Coordinator",
                "timestamp": "2026-04-22T14:14:52.319783Z",
                "version": "2.0.3"
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        "providerMetadata": {
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      "metrics": [
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-V468-QCJX-R72W

CVE-2026-40542 (GCVE-0-2026-40542)

Tags

Sightings

Nomenclature