{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-116774 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-116774 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-116774 is a medium-severity vulnerability in Eugeny russh, published on 27 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-116774 and fix it if it is affected.\n\nWhat it is: CVE-2026-116774 is a medium-severity vulnerability in Eugeny russh, published on 27 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-116774 in the wild and no public exploit code.\n\nAffected product: Eugeny russh. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-116774/ (Markdown: https://insights.sbomify.com/CVE-2026-116774/index.md)","id":"CVE-2026-116774","markdown":"https://insights.sbomify.com/CVE-2026-116774/index.md","name":"CVE-2026-116774","record":{"aliases":["DEBIAN-CVE-2026-116774","GHSA-fw5c-8223-6h42","UBUNTU-CVE-2026-116774"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. From 0.60.0 until 0.65.0, channel-open parsing accepts a peer-declared maximum_packet_size of zero and passes it into ChannelTx::poll_writable in russh/src/channels/io/tx.rs. The Channel::data, Channel::make_writer, and Channel::into_stream asynchronous write paths then calculate a writable size of zero and remain pending forever because window adjustments cannot satisfy a static zero packet maximum. An authenticated client can strand server writes, and a malicious server can strand client writes, allowing affected tasks, channels, and connections to accumulate without surfacing an error. This issue is fixed in version 0.65.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"russh: peer-declared zero maximum packet size permanently stalls channel writes (silent AsyncWrite hang)","id":"CVE-2026-116774","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"pageant: unbounded frame buffering on peer-controlled 4-byte length prefix (memory-exhaustion DoS)","id":"CVE-2026-116775"},"packages":[],"prev":{"headline":"russh's SSH client is susceptible to unbounded allocations via EXT_INFO packets","id":"CVE-2026-116773"},"products":["russh"],"published":"2026-10-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-28","vendors":["Eugeny"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-116774/"}