Vulnerability-Lookup

GHSA-2JRG-RF5X-568G

Vulnerability from github – Published: 2026-04-22 06:30 – Updated: 2026-04-29 20:44

Summary

Spring Security Vulnerable to Unauthorized User Impersonation when Using X.509 Client Certificates

Details

Vulnerability in Spring Spring Security. SubjectX500PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. This issue affects Spring Security: from 7.0.0 through 7.0.4.

Severity

6.8 (Medium)


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

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.0.4"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.security:spring-security-web"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-22747"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-297"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-29T20:44:36Z",
    "nvd_published_at": "2026-04-22T06:16:03Z",
    "severity": "MODERATE"
  },
  "details": "Vulnerability in Spring Spring Security.\u00a0SubjectX500PrincipalExtractor\u00a0does not correctly handle certain malformed X.509 certificate\u00a0CN\u00a0values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.\nThis issue affects Spring Security: from 7.0.0 through 7.0.4.",
  "id": "GHSA-2jrg-rf5x-568g",
  "modified": "2026-04-29T20:44:36Z",
  "published": "2026-04-22T06:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22747"
    },
    {
      "type": "WEB",
      "url": "https://github.com/spring-projects/spring-security/commit/88118afb8f9357ae7cc215500a441e89fee701c3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/spring-projects/spring-security"
    },
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-22747"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Spring Security Vulnerable to Unauthorized User Impersonation when Using X.509 Client Certificates"
}

CVE-2026-22747 (GCVE-0-2026-22747)

Vulnerability from cvelistv5 – Published: 2026-04-22 05:08 – Updated: 2026-04-23 03:56

Title

Unauthorized User Impersonation when Using X.509 Client Certificates

Summary

Severity

6.8 (Medium)


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

CWE

CWE-297 - Improper Validation of Certificate with Host Mismatch

Assigner

vmware

References

1 reference

URL	Tags
https://spring.io/security/cve-2026-22747

Impacted products

1 product

Vendor	Product	Version
Spring	Spring Security	Affected: 7.0.0 , ≤ 7.0.4 (custom)

Show details on NVD website

JSON

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    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-22747",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-22T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "problemTypes": [
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            "descriptions": [
              {
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                "description": "CWE-297 Improper Validation of Certificate with Host Mismatch",
                "lang": "en",
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              }
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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      "affected": [
        {
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          "product": "Spring Security",
          "vendor": "Spring",
          "versions": [
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              "lessThanOrEqual": "7.0.4",
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              "version": "7.0.0",
              "versionType": "custom"
            }
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
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      "references": [
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        }
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "Unauthorized User Impersonation when Using X.509 Client Certificates",
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    "datePublished": "2026-04-22T05:08:41.318Z",
    "dateReserved": "2026-01-09T06:55:03.990Z",
    "dateUpdated": "2026-04-23T03:56:11.308Z",
    "state": "PUBLISHED"
  },
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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-2JRG-RF5X-568G

CVE-2026-22747 (GCVE-0-2026-22747)

Tags

Sightings

Nomenclature