{"items":[{"id":"NVI-00009158","kind":"vulnerability","title":"russh's SSH agent server is susceptible to unbound allocations via repeated SSH_AGENT_CONSTRAIN_CONFIRM messages","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9wfm-jcj8-jfv9","CVE-2026-116696"],"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-865662010fda6ab8facc137738518686"],"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":"2026-10-30T22:58:48.000Z","value":"3.3 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-d4e0ffa2143854868bacd155b224c5c8"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.110%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.01255. Missing scores are unknown.","source_id":"sr-865662010fda6ab8facc137738518686"}],"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-d4e0ffa2143854868bacd155b224c5c8","url":"https://github.com/advisories/GHSA-9wfm-jcj8-jfv9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9wfm-jcj8-jfv9","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"},{"id":"sr-865662010fda6ab8facc137738518686","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-2026-116696","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.374Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d4e0ffa2143854868bacd155b224c5c8"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\n\n**All evidence, reproduction steps, and scripts in the report were verified against a real running instance. Nothing is fabricated or synthetic; every verdict is backed by captured output from an actual deployment.**\n\nThe SSH agent server that ships with russh (`russh::keys::agent::server::serve`) parses client key-addition requests and, for each `SSH_AGENT_CONSTRAIN_CONFIRM` (0x02) record it finds, pushes one `Constraint::Confirm` value into a per-key vector inside an unbounded loop, then stores the resulting pair permanently in its keystore (`russh/src/keys/agent/server.rs:296-303`). Neither the constraint vector nor the keystore has a size or count limit: the only boundary is the 256 KiB agent frame cap, and every 1-byte record a client sends becomes a 56-byte enum retained for the life of the process. Any process that can connect to the agent socket - the same trust model the project itself established when fixing a prior advisory about this same request handler - can therefore grow the agent's memory without bound and renew the growth at will: six 256 KiB requests retained 72.4 MiB (about 12.1 MiB per request, a roughly 48-fold amplification) while an equal number","public_affected_ranges":["< 0.65.0"]}],"null_published_at":"2026-11-03T02:33:09.114Z","source_updated_at":"2026-10-30T22:58:48.000Z","source_disclosed_at":"2026-10-30T22:58:47.000Z","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":"2026-10-31T21:55:49.621Z"},{"id":"NVI-00009158","kind":"vulnerability","title":"russh's SSH agent server is susceptible to unbound allocations via repeated SSH_AGENT_CONSTRAIN_CONFIRM messages","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9wfm-jcj8-jfv9","CVE-2026-116696"],"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-d4e0ffa2143854868bacd155b224c5c8"],"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":"2026-10-30T22:58:48.000Z","value":"3.3 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-d4e0ffa2143854868bacd155b224c5c8"}],"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-d4e0ffa2143854868bacd155b224c5c8","url":"https://github.com/advisories/GHSA-9wfm-jcj8-jfv9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9wfm-jcj8-jfv9","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d4e0ffa2143854868bacd155b224c5c8"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\n\n**All evidence, reproduction steps, and scripts in the report were verified against a real running instance. Nothing is fabricated or synthetic; every verdict is backed by captured output from an actual deployment.**\n\nThe SSH agent server that ships with russh (`russh::keys::agent::server::serve`) parses client key-addition requests and, for each `SSH_AGENT_CONSTRAIN_CONFIRM` (0x02) record it finds, pushes one `Constraint::Confirm` value into a per-key vector inside an unbounded loop, then stores the resulting pair permanently in its keystore (`russh/src/keys/agent/server.rs:296-303`). Neither the constraint vector nor the keystore has a size or count limit: the only boundary is the 256 KiB agent frame cap, and every 1-byte record a client sends becomes a 56-byte enum retained for the life of the process. Any process that can connect to the agent socket - the same trust model the project itself established when fixing a prior advisory about this same request handler - can therefore grow the agent's memory without bound and renew the growth at will: six 256 KiB requests retained 72.4 MiB (about 12.1 MiB per request, a roughly 48-fold amplification) while an equal number","public_affected_ranges":["< 0.65.0"]}],"null_published_at":"2026-10-31T22:13:31.288Z","source_updated_at":"2026-10-30T22:58:48.000Z","source_disclosed_at":"2026-10-30T22:58:47.000Z","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":"2026-10-31T21:55:49.621Z"}],"next_cursor":null,"snapshot_revision":"42594"}