{"schema_version":"1","data":[{"id":7897,"advisory_id":"f91a6e60-9d70-4c16-aeb2-44dab74051d5","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102823","source_published_at":"2026-09-29T18:25:58.084+00:00","published_at":"2026-10-24T22:52:21.680858+00:00","extraction_method":"structured","technologies":["core-cve","russh"],"cve_ids":["CVE-2026-102823"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"russh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never opened","summary":"Russh is a Rust SSH client and server library. Prior to 0.63.1, client_read_authenticated in russh/src/client/encrypted.rs forwards CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and CHANNEL_REQUEST subtypes exit-status, exit-signal, and xon-xoff to public client::Handler callbacks without confirming that the ChannelId belongs to a channel the client opened and established. A malicious SSH server can send lifecycle events for predicted, unopened, unconfirmed, or released channel identifiers, causing application panics or corrupting command completion and exit-code tracking. This issue is fixed in version 0.63.1.","evidence":"cve:CVE-2026-102823","products":[{"name":{"value":"russh","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"high","structured":{"id":"CVE-2026-102823","aliases":["CVE-2026-102823"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"status":"affected","version":"< 0.63.1"}]}],"modified":"2026-10-02T12:20:10.605Z","provider":"cve","references":["https://github.com/Eugeny/russh/security/advisories/GHSA-47hw-gvq5-r2gm","https://github.com/Eugeny/russh/commit/3430fd26ecafc0dc3705210f5f39a9119fa22774","https://github.com/Eugeny/russh/releases/tag/v0.63.1"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102823","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-02T12:19:44.206468Z"}}}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-47hw-gvq5-r2gm","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-02T12:20:10.605Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T18:25:58.084Z"}}},"related_cves":[{"value":"CVE-2026-102823","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}},{"id":4943,"advisory_id":"de858deb-b1bf-4a6c-ad0a-0e6306fcd06b","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102824","source_published_at":"2026-09-29T18:27:41.65+00:00","published_at":"2026-10-24T22:00:41.183386+00:00","extraction_method":"structured","technologies":["core-cve","russh"],"cve_ids":["CVE-2026-102824"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Russh: Missing X25519 zero-point validation in hybrid ML-KEM key exchange","summary":"Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519 contribution to the combined shared secret to zero. A malicious SSH peer can therefore make the combined secret depend only on ML-KEM, defeating the hybrid exchange's intended fallback protection if ML-KEM is later weakened. This issue is fixed in version 0.63.0.","evidence":"cve:CVE-2026-102824","products":[{"name":{"value":"russh","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-102824","aliases":["CVE-2026-102824"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"LOW"}}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"status":"affected","version":"< 0.63.0"}]}],"modified":"2026-09-30T20:24:58.381Z","provider":"cve","references":["https://github.com/Eugeny/russh/security/advisories/GHSA-w3jg-pjxf-73p4","https://github.com/Eugeny/russh/commit/8da8967f196472576b1565d518a0ed60fce60f0c","https://github.com/Eugeny/russh/releases/tag/v0.63.0"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102824","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T20:24:54.936526Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-30T20:24:58.381Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T18:27:41.650Z"}}},"related_cves":[{"value":"CVE-2026-102824","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}},{"id":4893,"advisory_id":"e9658bb4-7180-4ede-b23c-04dbab46649e","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102820","source_published_at":"2026-09-29T18:18:43.297+00:00","published_at":"2026-10-24T21:59:18.325343+00:00","extraction_method":"structured","technologies":["core-cve","pageant","russh"],"cve_ids":["CVE-2026-102820"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"pageant: Out-of-bounds read / oversized allocation in `pageant` MemoryMap::read via a malicious Pageant agent (Windows)","summary":"pageant provides a [PageantStream] type that implements [AsyncRead] and [AsyncWrite] traits and can be used to talk to a running Pageant instance. Prior to pageant 0.2.3, the Windows pageant crate's pageant/src/wmmessage.rs MemoryMap::read function trusts a peer-controlled u32 response length supplied through the 8192-byte Pageant shared-memory mapping reached by AgentClient::connect_pageant. A local process that impersonates the Pageant window can make query_pageant_direct allocate up to approximately 4 GiB and copy beyond the mapped view, reliably crashing a russh client and conditionally exposing adjacent committed memory. This issue is fixed in pageant 0.2.3.","evidence":"cve:CVE-2026-102820","products":[{"name":{"value":"russh","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]},{"name":{"value":"pageant","evidence":"/containers/cna/affected/1/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-102820","aliases":["CVE-2026-102820"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.2,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"status":"affected","version":"< 0.63.2"}]},{"vendor":"rust","product":"pageant","versions":[{"status":"affected","version":"< 0.2.3"}]}],"modified":"2026-09-30T20:11:08.453Z","provider":"cve","references":["https://github.com/Eugeny/russh/security/advisories/GHSA-g4mp-vgx3-xrvm","https://github.com/Eugeny/russh/commit/5d566989ebabfdebfe6b33243d31765a0812260b","https://github.com/Eugeny/russh/releases/tag/v0.63.2"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102820","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T20:11:00.619637Z"}}}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-g4mp-vgx3-xrvm","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-30T20:11:08.453Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T18:18:43.297Z"}}},"related_cves":[{"value":"CVE-2026-102820","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}},{"id":4843,"advisory_id":"0f44f688-9347-477d-9180-32b9810b34cd","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102821","source_published_at":"2026-09-29T18:21:21.858+00:00","published_at":"2026-10-24T21:58:48.94704+00:00","extraction_method":"structured","technologies":["core-cve","russh"],"cve_ids":["CVE-2026-102821"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey","summary":"Russh is a Rust SSH client and server library. Prior to 0.63.2, an authenticated remote peer can send SSH_MSG_KEXINIT without the required SSH_MSG_KEX_ECDH_INIT and then flood SSH_MSG_CHANNEL_OPEN messages while SessionKexState::InProgress prevents priority_receiver in russh/src/server/session.rs from being drained. The server continues processing network input and enqueues a ChannelOpenReply for each request on an unbounded channel, allowing one connection to grow memory until the process is terminated. This issue is fixed in version 0.63.2.","evidence":"cve:CVE-2026-102821","products":[{"name":{"value":"russh","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-102821","aliases":["CVE-2026-102821"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"status":"affected","version":"< 0.63.2"}]}],"modified":"2026-09-30T19:35:02.962Z","provider":"cve","references":["https://github.com/Eugeny/russh/security/advisories/GHSA-35g8-35p8-c8fw","https://github.com/Eugeny/russh/commit/a282af361ac99bc76b80876d1aae128e89dbf66b","https://github.com/Eugeny/russh/releases/tag/v0.63.2"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102821","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T19:34:47.748081Z"}}}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-35g8-35p8-c8fw","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-30T19:35:02.962Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T18:21:21.858Z"}}},"related_cves":[{"value":"CVE-2026-102821","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}},{"id":4831,"advisory_id":"28caa182-ffa1-4b97-819f-ababc4005d15","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102825","source_published_at":"2026-09-29T18:31:32.393+00:00","published_at":"2026-10-24T21:58:41.764959+00:00","extraction_method":"structured","technologies":["core-cve","russh"],"cve_ids":["CVE-2026-102825"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path","summary":"Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6.","evidence":"cve:CVE-2026-102825","products":[{"name":{"value":"russh","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"low","structured":{"id":"CVE-2026-102825","aliases":["CVE-2026-102825"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":3.7,"attackVector":"NETWORK","baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"status":"affected","version":"< 0.62.6"}]}],"modified":"2026-09-30T19:29:26.432Z","provider":"cve","references":["https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35","https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653","https://github.com/Eugeny/russh/releases/tag/v0.62.6"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102825","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T19:29:11.461462Z"}}}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-30T19:29:26.432Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T18:31:32.393Z"}}},"related_cves":[{"value":"CVE-2026-102825","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}},{"id":3996,"advisory_id":"64a07360-19d7-4cd1-bb93-ea1d6b011d0c","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102822","source_published_at":"2026-09-29T18:23:28.061+00:00","published_at":"2026-10-24T21:44:46.12753+00:00","extraction_method":"structured","technologies":["core-cve","russh"],"cve_ids":["CVE-2026-102822"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic","summary":"Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task. This issue is fixed in version 0.63.1.","evidence":"cve:CVE-2026-102822","products":[{"name":{"value":"russh","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"low","structured":{"id":"CVE-2026-102822","aliases":["CVE-2026-102822"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":3.7,"attackVector":"NETWORK","baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"status":"affected","version":"< 0.63.1"}]}],"modified":"2026-09-29T19:53:30.291Z","provider":"cve","references":["https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9","https://github.com/Eugeny/russh/commit/2885385abfee279092a41d80c6cb6ac367353159","https://github.com/Eugeny/russh/releases/tag/v0.63.1"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102822","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T19:53:03.923621Z"}}}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T19:53:30.291Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T18:23:28.061Z"}}},"related_cves":[{"value":"CVE-2026-102822","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":7897,"next_before":3996}