{"items":[{"id":"NVI-00018550","kind":"vulnerability","title":"Russh SSH message fields were decoded through allocation-first parsers before field-specific bounds","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4r3c-5hpg-58qr","CVE-2026-48110"],"plain_summary":"GitHub lists this reviewed advisory for russh. 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-3aad2cc2d2f77e0f1b6d5443aa8e54f0"],"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":"2026-06-11T20:33:22.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3aad2cc2d2f77e0f1b6d5443aa8e54f0"}],"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-3aad2cc2d2f77e0f1b6d5443aa8e54f0","url":"https://github.com/advisories/GHSA-4r3c-5hpg-58qr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4r3c-5hpg-58qr","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T15:13:13.153Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3aad2cc2d2f77e0f1b6d5443aa8e54f0"],"technology":"russh","known_exclusions":[],"conditions_summary":"# SSH message fields were decoded through allocation-first parsers before field-specific bounds\n\n### Summary\n\nSeveral `russh` client and server message handlers decoded attacker-controlled SSH strings, name-lists, and byte fields into owned allocations before applying field-specific bounds. A remote SSH peer could send oversized, high-fanout, or malformed length-prefixed fields and make the library allocate, attempt to allocate, or split data before rejecting input that should have been rejected earlier.\n\n\n### Affected Versions\n\nOldest verified exploitable stable release: `russh 0.34.0`.\n\n- Historical stronger case: `russh >= 0.34.0, = 0.58.0`, including `0.60.2`. These releases moved non-secret packet/decompression buffers off `CryptoVec`, but the allocation-first SSH field parser issue remains reachable as a `Vec`/`String`/name-list resource ex","public_affected_ranges":[">= 0.34.0, < 0.61.0"]}],"null_published_at":"2026-11-07T07:07:39.852Z","source_updated_at":"2026-06-11T20:33:22.000Z","source_disclosed_at":"2026-06-11T20:33:21.000Z","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":"2026-11-06T15:13:13.153Z"}],"next_cursor":null,"snapshot_revision":"42594"}