CVE-2026-70429 (GCVE-0-2026-70429)

Vulnerability from cvelistv5 – Published: 2026-08-05 17:40 – Updated: 2026-08-05 17:40
VLAI
Summary
Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names inconsistently, allowing attackers able to create new users or groups with names that case-insensitively match other characters to impersonate other users or be granted their permissions in some circumstances.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Jenkins Project Jenkins Unaffected: 2.576 , < * (maven)
Unaffected: 2.568.2 , < 2.568.* (maven)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Jenkins",
          "vendor": "Jenkins Project",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "2.576",
              "versionType": "maven"
            },
            {
              "lessThan": "2.568.*",
              "status": "unaffected",
              "version": "2.568.2",
              "versionType": "maven"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names inconsistently, allowing attackers able to create new users or groups with names that case-insensitively match other characters to impersonate other users or be granted their permissions in some circumstances."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T17:40:29.055Z",
        "orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
        "shortName": "jenkins"
      },
      "references": [
        {
          "name": "Jenkins Security Advisory 2026-08-05",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3924"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
    "assignerShortName": "jenkins",
    "cveId": "CVE-2026-70429",
    "datePublished": "2026-08-05T17:40:29.055Z",
    "dateReserved": "2026-08-04T14:13:20.602Z",
    "dateUpdated": "2026-08-05T17:40:29.055Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-70429\",\"sourceIdentifier\":\"jenkinsci-cert@googlegroups.com\",\"published\":\"2026-08-05T18:17:12.560\",\"lastModified\":\"2026-08-05T18:17:12.560\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names inconsistently, allowing attackers able to create new users or groups with names that case-insensitively match other characters to impersonate other users or be granted their permissions in some circumstances.\"}],\"affected\":[{\"source\":\"jenkinsci-cert@googlegroups.com\",\"affectedData\":[{\"vendor\":\"Jenkins Project\",\"product\":\"Jenkins\",\"defaultStatus\":\"affected\",\"versions\":[{\"version\":\"2.576\",\"lessThan\":\"*\",\"versionType\":\"maven\",\"status\":\"unaffected\"},{\"version\":\"2.568.2\",\"lessThan\":\"2.568.*\",\"versionType\":\"maven\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3924\",\"source\":\"jenkinsci-cert@googlegroups.com\"}]}}"
  }
}



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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

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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.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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