{"id":"EUVD-2026-104457","enisaUuid":"f340ffda-98aa-3855-894a-d4122ea1682f","description":"russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. Prior to 0.64.1, the agent server spawns a separate long-lived task for every SSH_AGENT_CONSTRAIN_LIFETIME record in a constrained add-key request. The loop accepts repeated lifetime records, clones the key blob into each task, and does not roll back tasks when later constraint parsing fails. An attacker that can speak the agent protocol locally or through agent forwarding can exhaust memory and tasks until the agent process is starved or terminated, denying SSH agent service. This issue is fixed in version 0.64.1.","datePublished":"Oct 19, 2026, 4:30:24 PM","dateUpdated":"Oct 19, 2026, 6:29:47 PM","baseScore":4.3,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","references":"https://github.com/Eugeny/russh/security/advisories/GHSA-4wc5-f2rc-q74m\nhttps://github.com/Eugeny/russh/commit/4c305033d72f8e5dd21a3fd4c53a6c291a16ebd1\nhttps://github.com/Eugeny/russh/releases/tag/v0.64.1\n","aliases":"CVE-2026-111061\nGHSA-4wc5-f2rc-q74m\n","assigner":"GitHub_M","epss":0.35,"enisaIdProduct":[{"id":"535425e5-9c1e-3653-b5d0-a57f3a3a7ec6","product":{"name":"russh","vendor":{"name":"Eugeny"}},"product_version":"\u003c 0.64.1"}],"enisaIdVendor":[{"id":"c82309e0-7b6d-3542-9298-2e23be3689e2","vendor":{"name":"Eugeny"}}],"enisaIdVulnerability":[{"id":"44370d85-977c-32f4-86f5-8abea5b11544","vulnerability":{"id":"CVE-2026-111061","description":"russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. Prior to 0.64.1, the agent server spawns a separate long-lived task for every SSH_AGENT_CONSTRAIN_LIFETIME record in a constrained add-key request. The loop accepts repeated lifetime records, clones the key blob into each task, and does not roll back tasks when later constraint parsing fails. An attacker that can speak the agent protocol locally or through agent forwarding can exhaust memory and tasks until the agent process is starved or terminated, denying SSH agent service. This issue is fixed in version 0.64.1.","datePublished":"Oct 19, 2026, 4:30:24 PM","dateUpdated":"Oct 19, 2026, 6:29:47 PM","status":"PUBLISHED","baseScore":4.3,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","references":"https://github.com/Eugeny/russh/security/advisories/GHSA-4wc5-f2rc-q74m\nhttps://github.com/Eugeny/russh/commit/4c305033d72f8e5dd21a3fd4c53a6c291a16ebd1\nhttps://github.com/Eugeny/russh/releases/tag/v0.64.1\n","enisa_id":"EUVD-2026-104457\n","assigner":"GitHub_M","epss":0.35,"dataProcessed":"Nov 2, 2026, 7:14:55 AM","vulnerabilityProduct":[{"id":"b2292012-2726-3a94-95f6-e395edf08c79","product":{"name":"russh","vendor":{"name":"Eugeny"}},"product_version":"\u003c 0.64.1"}],"vulnerabilityVendor":[{"id":"1c325ed4-c8cf-3d0f-967f-b1a8f1d5282f","vendor":{"name":"Eugeny"}}]}},{"id":"97e00632-246c-378c-aa29-3627d8d46165","vulnerability":{"id":"GHSA-4wc5-f2rc-q74m","description":"russh: Unbounded memory allocation in agent protocol server via crafted constraint records","datePublished":"Oct 19, 2026, 5:06:46 PM","dateUpdated":"Oct 19, 2026, 5:06:46 PM","baseScore":0.0,"references":"https://github.com/Eugeny/russh/security/advisories/GHSA-4wc5-f2rc-q74m\nhttps://github.com/Eugeny/russh/commit/4c305033d72f8e5dd21a3fd4c53a6c291a16ebd1\nhttps://github.com/Eugeny/russh\nhttps://github.com/Eugeny/russh/releases/tag/v0.64.1\n","enisa_id":"EUVD-2026-104457\n","aliases":"GHSA-4wc5-f2rc-q74m\nCVE-2026-111061\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:08:27 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[{"id":"ab2a7fc3-0bcd-3f1c-8404-4370dc15c4a5","advisory":{"id":"RHSA-2026:90366","description":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","summary":"An update for Red Hat Hardened Images RPMs is now available.","datePublished":"Oct 26, 2026, 5:12:42 PM","dateUpdated":"Oct 29, 2026, 9:10:18 PM","baseScore":0.0,"references":"https://access.redhat.com/errata/RHSA-2026:90366\nhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_90366.json\n","aliases":"CVE-2026-111061\n","source":{"id":9,"name":"csaf_redhat"},"advisoryProduct":[{"id":"128f1f97-6599-33ac-84af-29c018d13ac2","product":{"name":"openshell-gateway-0:0.1.5-0.1.hum1@x86_64","vendor":{"name":"Red Hat"}}},{"id":"2b6741b5-c66c-3713-80be-c27b4ace93b2","product":{"name":"python3-openshell-0:0.1.5-0.1.hum1@aarch64","vendor":{"name":"Red Hat"}}},{"id":"336f85e2-d728-3214-97e8-8dbb68bfbbd3","product":{"name":"Red Hat Hardened Images","vendor":{"name":"Red Hat"}}},{"id":"4239ff01-cbbb-372b-96ac-a62eed9b81c1","product":{"name":"python3-openshell-0:0.1.5-0.1.hum1@x86_64","vendor":{"name":"Red Hat"}}},{"id":"4cec16d0-92d8-3ecc-90e4-a55fc2044c7f","product":{"name":"openshell-gateway-0:0.1.5-0.1.hum1@aarch64","vendor":{"name":"Red Hat"}}},{"id":"55740392-3763-3f5e-a537-79ca0473f25c","product":{"name":"openshell-0:0.1.5-0.1.hum1@x86_64","vendor":{"name":"Red Hat"}}},{"id":"9a6ea689-337a-339e-8912-03c122fe7ec3","product":{"name":"openshell-0:0.1.5-0.1.hum1@aarch64","vendor":{"name":"Red Hat"}}},{"id":"f1e02b09-4beb-3079-ac08-ddafcd488948","product":{"name":"openshell-0:0.1.5-0.1.hum1@src","vendor":{"name":"Red Hat"}}}]}}]}