{"items":[{"id":"NVI-00013866","kind":"vulnerability","title":"Jenkins arbitrary type deserialization from attacker-controlled config.xml allows remote code execution and user impersonation","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g2xq-2v27-4rh3","CVE-2026-53435"],"plain_summary":"GitHub lists this reviewed advisory for org.jenkins-ci.main:jenkins-core, org.jenkins-ci.main:jenkins-core. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-038eb2b3227704286f230edca20fd1b5"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-27T15:32:31.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1261a990d947da36e00651bc873241f1"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"53.131%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.98982. Missing scores are unknown.","source_id":"sr-038eb2b3227704286f230edca20fd1b5"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1261a990d947da36e00651bc873241f1","url":"https://github.com/advisories/GHSA-g2xq-2v27-4rh3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g2xq-2v27-4rh3","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-038eb2b3227704286f230edca20fd1b5","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-53435","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.787Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1261a990d947da36e00651bc873241f1"],"technology":"org.jenkins-ci.main:jenkins-core","known_exclusions":[],"conditions_summary":"In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.\n\nThis can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.","public_affected_ranges":["< 2.555.3"]},{"certainty":"source_listed","source_ids":["sr-1261a990d947da36e00651bc873241f1"],"technology":"org.jenkins-ci.main:jenkins-core","known_exclusions":[],"conditions_summary":"In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.\n\nThis can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.","public_affected_ranges":[">= 2.556, < 2.568"]}],"null_published_at":"2026-11-04T10:04:41.540Z","source_updated_at":"2026-08-27T15:32:31.000Z","source_disclosed_at":"2026-06-10T15:31:31.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-02T09:56:23.004Z"},{"id":"NVI-00013866","kind":"vulnerability","title":"Jenkins arbitrary type deserialization from attacker-controlled config.xml allows remote code execution and user impersonation","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g2xq-2v27-4rh3","CVE-2026-53435"],"plain_summary":"GitHub lists this reviewed advisory for org.jenkins-ci.main:jenkins-core, org.jenkins-ci.main:jenkins-core. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1261a990d947da36e00651bc873241f1"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-27T15:32:31.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1261a990d947da36e00651bc873241f1"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1261a990d947da36e00651bc873241f1","url":"https://github.com/advisories/GHSA-g2xq-2v27-4rh3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g2xq-2v27-4rh3","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1261a990d947da36e00651bc873241f1"],"technology":"org.jenkins-ci.main:jenkins-core","known_exclusions":[],"conditions_summary":"In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.\n\nThis can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.","public_affected_ranges":["< 2.555.3"]},{"certainty":"source_listed","source_ids":["sr-1261a990d947da36e00651bc873241f1"],"technology":"org.jenkins-ci.main:jenkins-core","known_exclusions":[],"conditions_summary":"In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.\n\nThis can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.","public_affected_ranges":[">= 2.556, < 2.568"]}],"null_published_at":"2026-11-02T10:00:37.163Z","source_updated_at":"2026-08-27T15:32:31.000Z","source_disclosed_at":"2026-06-10T15:31:31.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-02T09:56:23.004Z"}],"next_cursor":null,"snapshot_revision":"42594"}