{"items":[{"id":"NVI-00017700","kind":"vulnerability","title":"Jenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mq58-m26g-46gp","CVE-2026-48920"],"plain_summary":"GitHub lists this reviewed advisory for org.jenkins-ci.plugins:email-ext. 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-4a7ef80868b476e6730ae2a51d3f64b1"],"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":"2026-07-01T19:42:16.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4a7ef80868b476e6730ae2a51d3f64b1"}],"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-4a7ef80868b476e6730ae2a51d3f64b1","url":"https://github.com/advisories/GHSA-mq58-m26g-46gp","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mq58-m26g-46gp","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T03:49:14.191Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4a7ef80868b476e6730ae2a51d3f64b1"],"technology":"org.jenkins-ci.plugins:email-ext","known_exclusions":[],"conditions_summary":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier includes a feature that allows inlining images as `base64` in email content by setting the `data-inline` attribute. No restrictions are placed on the image URLs that can be inlined.\n\nThis allows attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.\n\nThe feature allowing inlining images as `base64` in email content by setting the `data-inline` attribute is removed from Email Extension Plugin 1933.1935.v276319e3cc47.","public_affected_ranges":["< 1933.1935.v276319e3cc47"]}],"null_published_at":"2026-11-05T19:10:21.454Z","source_updated_at":"2026-07-01T19:42:16.000Z","source_disclosed_at":"2026-05-27T15:33:26.000Z","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":"2026-11-05T03:49:14.191Z"}],"next_cursor":null,"snapshot_revision":"42594"}