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

Vulnerability from cvelistv5 – Published: 2026-08-27 17:57 – Updated: 2026-08-28 14:00
VLAI
Title
Timing Attack via Non-Constant-Time Comparison of Sensitive Values
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 13:59 UTC
CWE
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
Show details on NVD website

{
  "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": [
            {
              "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"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eSeveral 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.\u003c/p\u003e\u003cp\u003eSpring Security 7.1.0\u003cbr/\u003eSpring Security 7.0.0 - 7.0.6\u003cbr/\u003eSpring Security 6.5.0 - 6.5.11\u003cbr/\u003eSpring Security 6.4.0 - 6.4.18\u003cbr/\u003eSpring Security 5.8.0 - 5.8.27\u003cbr/\u003eSpring Security 5.7.0 - 5.7.25\u003c/p\u003e"
            }
          ],
          "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"
        }
      ],
      "impacts": [
        {
          "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."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-208 Observable Timing Discrepancy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T17:57:34.993Z",
        "orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
        "shortName": "vmware"
      },
      "references": [
        {
          "url": "https://spring.io/security/cve-2026-59276"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Timing Attack via Non-Constant-Time Comparison of Sensitive Values"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
    "assignerShortName": "vmware",
    "cveId": "CVE-2026-59276",
    "datePublished": "2026-08-27T17:57:34.993Z",
    "dateReserved": "2026-07-04T18:13:09.973Z",
    "dateUpdated": "2026-08-28T14:00:41.248Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-59276",
      "date": "2026-09-21",
      "epss": "0.00257",
      "percentile": "0.17612"
    },
    "nvd": {
      "cve": {
        "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",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DD15AD30-A708-4484-B0E2-601254C7341E",
                    "versionEndExcluding": "7.0.6.1",
                    "versionStartIncluding": "7.0.0",
                    "vulnerable": true
                  },
                  {
                    "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": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "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"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-02T13:21:01+00:00",
      "cve": "CVE-2026-59276",
      "id": "CVE-2026-59276",
      "initial_release_date": "2026-08-27T17:57:34.993000+00:00",
      "product_status:known_affected": "7",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "org.springframework.security/spring-security-core: Spring Security: Information disclosure via timing attack in sensitive value comparison",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59276.json",
      "version": "3"
    },
    "vulnrichment": {
      "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": "2026-08-28T14:00:37.984Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "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"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eSeveral 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.\u003c/p\u003e\u003cp\u003eSpring Security 7.1.0\u003cbr/\u003eSpring Security 7.0.0 - 7.0.6\u003cbr/\u003eSpring Security 6.5.0 - 6.5.11\u003cbr/\u003eSpring Security 6.4.0 - 6.4.18\u003cbr/\u003eSpring Security 5.8.0 - 5.8.27\u003cbr/\u003eSpring Security 5.7.0 - 5.7.25\u003c/p\u003e"
                }
              ],
              "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"
            }
          ],
          "impacts": [
            {
              "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."
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "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"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "CWE-208 Observable Timing Discrepancy",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-27T17:57:34.993Z",
            "orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
            "shortName": "vmware"
          },
          "references": [
            {
              "url": "https://spring.io/security/cve-2026-59276"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Timing Attack via Non-Constant-Time Comparison of Sensitive Values"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
        "assignerShortName": "vmware",
        "cveId": "CVE-2026-59276",
        "datePublished": "2026-08-27T17:57:34.993Z",
        "dateReserved": "2026-07-04T18:13:09.973Z",
        "dateUpdated": "2026-08-28T14:00:41.248Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…