Vulnerability-Lookup

FKIE_CVE-2026-59276

Vulnerability from fkie_nvd - Published: 2026-08-27 20:17 - Updated: 2026-09-02 16:45

Severity

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

Several components in Spring Security compare security-sensitive values using standard string equality (String.equals()) rather than a constant-time comparison. Because String.equals() returns as soon as it finds a differing character, the time taken to reject an incorrect value is proportional to the number of leading characters that match the expected value. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Spring Security 6.4.0 - 6.4.18 Spring Security 5.8.0 - 5.8.27 Spring Security 5.7.0 - 5.7.25

References

	URL	Tags
	security@vmware.com	https://spring.io/security/cve-2026-59276	Vendor Advisory

Impacted products

Vendor	Product	Version
vmware	spring_security	*
vmware	spring_security	*
vmware	spring_security	*
vmware	spring_security	*
vmware	spring_security	*
vmware	spring_security	*

JSON

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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Spring Security",
          "vendor": "Spring",
          "versions": [
            {
              "status": "affected",
              "version": "7.1.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "7.0.6",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "6.5.11",
              "status": "affected",
              "version": "6.5.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "6.4.18",
              "status": "affected",
              "version": "6.4.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.8.27",
              "status": "affected",
              "version": "5.8.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.7.25",
              "status": "affected",
              "version": "5.7.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@vmware.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5E861D3B-F22C-4CA8-830A-0926FD42EEB3",
              "versionEndExcluding": "5.7.26",
              "versionStartIncluding": "5.7.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0BB6ED3-A736-413C-88CE-F5FB8195DA7F",
              "versionEndExcluding": "5.8.28",
              "versionStartIncluding": "5.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "087C4F36-7F24-45E6-BDE4-0E3915217C38",
              "versionEndExcluding": "6.4.19",
              "versionStartIncluding": "6.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E7F694AF-F153-4011-80B4-95C68FD9815C",
              "versionEndExcluding": "6.5.12",
              "versionStartIncluding": "6.5.0",
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            },
            {
              "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DD15AD30-A708-4484-B0E2-601254C7341E",
              "versionEndExcluding": "7.0.6.1",
              "versionStartIncluding": "7.0.0",
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            },
            {
              "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ABC35A3B-2FE4-4ACC-AD66-F1EE62086E08",
              "versionEndExcluding": "7.1.0.1",
              "versionStartIncluding": "7.1.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Several components in Spring Security compare security-sensitive values using standard string equality (String.equals()) rather than a constant-time comparison. Because String.equals() returns as soon as it finds a differing character, the time taken to reject an incorrect value is proportional to the number of leading characters that match the expected value.\nSpring Security 7.1.0\nSpring Security 7.0.0 - 7.0.6\nSpring Security 6.5.0 - 6.5.11\nSpring Security 6.4.0 - 6.4.18\nSpring Security 5.8.0 - 5.8.27\nSpring Security 5.7.0 - 5.7.25"
    }
  ],
  "id": "CVE-2026-59276",
  "lastModified": "2026-09-02T16:45:37.810",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security@vmware.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-59276",
          "options": [
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            },
            {
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            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-28T13:59:17.786904Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-27T20:17:53.863",
  "references": [
    {
      "source": "security@vmware.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://spring.io/security/cve-2026-59276"
    }
  ],
  "sourceIdentifier": "security@vmware.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-208"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

CVE-2026-59276 (GCVE-0-2026-59276)

Vulnerability from cvelistv5 – Published: 2026-08-27 17:57 – Updated: 2026-08-28 14:00

Title

Timing Attack via Non-Constant-Time Comparison of Sensitive Values

Summary

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-28 13:59 UTC

CWE

CWE-208 Observable Timing Discrepancy
CWE-208 - Observable Timing Discrepancy

Assigner

vmware mitre root

References

1 reference

URL	Tags
https://spring.io/security/cve-2026-59276

Impacted products

1 product

Vendor	Product	Version
Spring	Spring Security	Affected: 7.1.0 (custom) Affected: 7.0.0 , ≤ 7.0.6 (custom) Affected: 6.5.0 , ≤ 6.5.11 (custom) Affected: 6.4.0 , ≤ 6.4.18 (custom) Affected: 5.8.0 , ≤ 5.8.27 (custom) Affected: 5.7.0 , ≤ 5.7.25 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-59276",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T13:59:17.786904Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-208",
                "description": "CWE-208 Observable Timing Discrepancy",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T14:00:41.248Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Spring Security",
          "vendor": "Spring",
          "versions": [
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              "status": "affected",
              "version": "7.1.0",
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            {
              "lessThanOrEqual": "7.0.6",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "6.5.11",
              "status": "affected",
              "version": "6.5.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "6.4.18",
              "status": "affected",
              "version": "6.4.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.8.27",
              "status": "affected",
              "version": "5.8.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.7.25",
              "status": "affected",
              "version": "5.7.0",
              "versionType": "custom"
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            }
          ]
        }
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2026-59276

CVE-2026-59276 (GCVE-0-2026-59276)

Tags

Sightings

Nomenclature