GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-53436 (GCVE-0-2026-53436)

Vulnerability from cvelistv5 – Published: 2026-06-10 13:05 – Updated: 2026-06-10 15:36
VLAI
Summary
Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 15:36 UTC
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
References
Impacted products
Vendor Product Version CPE status
Jenkins Project Jenkins Unaffected: 2.568 , < * (maven)
Unaffected: 2.555.3 , < 2.555.* (maven)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-53436",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T15:36:38.038604Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-601",
                "description": "CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-10T15:36:40.939Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Jenkins",
          "vendor": "Jenkins Project",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "2.568",
              "versionType": "maven"
            },
            {
              "lessThan": "2.555.*",
              "status": "unaffected",
              "version": "2.555.3",
              "versionType": "maven"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-10T13:05:57.934Z",
        "orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
        "shortName": "jenkins"
      },
      "references": [
        {
          "name": "Jenkins Security Advisory 2026-06-10",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
    "assignerShortName": "jenkins",
    "cveId": "CVE-2026-53436",
    "datePublished": "2026-06-10T13:05:57.934Z",
    "dateReserved": "2026-06-09T14:26:44.788Z",
    "dateUpdated": "2026-06-10T15:36:40.939Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53436",
      "date": "2026-09-17",
      "epss": "0.00282",
      "percentile": "0.20774"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53436\",\"sourceIdentifier\":\"jenkinsci-cert@googlegroups.com\",\"published\":\"2026-06-10T14:16:36.547\",\"lastModified\":\"2026-06-17T10:57:55.083\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks.\"}],\"affected\":[{\"source\":\"jenkinsci-cert@googlegroups.com\",\"affectedData\":[{\"vendor\":\"Jenkins Project\",\"product\":\"Jenkins\",\"defaultStatus\":\"affected\",\"versions\":[{\"version\":\"2.568\",\"lessThan\":\"*\",\"versionType\":\"maven\",\"status\":\"unaffected\"},{\"version\":\"2.555.3\",\"lessThan\":\"2.555.*\",\"versionType\":\"maven\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-10T15:36:38.038604Z\",\"id\":\"CVE-2026-53436\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-601\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*\",\"versionEndExcluding\":\"2.555.3\",\"matchCriteriaId\":\"648B5148-FE3B-464A-8963-DCF7ACEF84E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*\",\"versionEndExcluding\":\"2.568\",\"matchCriteriaId\":\"356A970F-6576-49B6-8EBA-E9770ED190A7\"}]}]}],\"references\":[{\"url\":\"https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755\",\"source\":\"jenkinsci-cert@googlegroups.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:44:41+00:00",
      "cve": "CVE-2026-53436",
      "id": "CVE-2026-53436",
      "initial_release_date": "2026-06-10T13:05:57.934000+00:00",
      "product_status:known_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "jenkins: Jenkins: Phishing attacks via improper redirect URL validation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53436.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"39769cd5-e6e2-4dc8-927e-97b3aa056f5b\", \"shortName\": \"jenkins\", \"dateUpdated\": \"2026-06-10T13:05:57.934Z\"}, \"affected\": [{\"vendor\": \"Jenkins Project\", \"product\": \"Jenkins\", \"versions\": [{\"version\": \"2.568\", \"versionType\": \"maven\", \"lessThan\": \"*\", \"status\": \"unaffected\"}, {\"version\": \"2.555.3\", \"versionType\": \"maven\", \"lessThan\": \"2.555.*\", \"status\": \"unaffected\"}], \"defaultStatus\": \"affected\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks.\"}], \"references\": [{\"name\": \"Jenkins Security Advisory 2026-06-10\", \"url\": \"https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755\", \"tags\": [\"vendor-advisory\"]}]}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-53436\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-10T15:36:38.038604Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-601\", \"description\": \"CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-10T15:36:32.314Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-53436\", \"assignerOrgId\": \"39769cd5-e6e2-4dc8-927e-97b3aa056f5b\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"jenkins\", \"dateReserved\": \"2026-06-09T14:26:44.788Z\", \"datePublished\": \"2026-06-10T13:05:57.934Z\", \"dateUpdated\": \"2026-06-10T15:36:40.939Z\"}",
      "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…

Detection rules are retrieved from Rulezet.

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…