{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2026-59846 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-59846 is a low-severity command injection vulnerability in Redhat Enterprise Linux, published on 21 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-59846 and fix it if it is affected.\n\nWhat it is: CVE-2026-59846 is a low-severity command injection vulnerability in Redhat Enterprise Linux, published on 21 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-59846 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. 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-2026-59846/ (Markdown: https://insights.sbomify.com/CVE-2026-59846/index.md)","id":"CVE-2026-59846","markdown":"https://insights.sbomify.com/CVE-2026-59846/index.md","name":"CVE-2026-59846","record":{"aliases":["BELL-CVE-2026-59846","DEBIAN-CVE-2026-59846","ECHO-689c-0cb6-4ae0","GHSA-fvwj-j79q-57v7","UBUNTU-CVE-2026-59846"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"SSH library","requires_auth":"low_privilege","summary":"A malicious username in libssh ProxyCommand can inject shell metacharacters, leading to environment variable exposure and potential code execution.","user_interaction":"required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"libssh","vendor":"libssh"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"hardened_images","vendor":"redhat"}],"cvss":{"score":3.9,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command"},{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Libssh: libssh: information disclosure via proxycommand %r username expansion","id":"CVE-2026-59846","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux","redhat:hardened_images"],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Libssh: libssh: integrity downgrade via openssl aes-gcm tag verification","id":"CVE-2026-59847"},"packages":[],"prev":{"headline":"Libssh: libssh: denial of service via unchecked proxycommand fork() failure","id":"CVE-2026-59845"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Hardened Images"],"published":"2026-07-21","related":[{"cvss_score":8.8,"headline":"Libssh: libssh: authentication bypass via missing gssapi principal check","id":"CVE-2026-59851","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.1,"headline":"Libssh: invalid return code for chacha20 poly1305 with openssl backend","id":"CVE-2025-5987","kev_date_added":null,"published":"2025-07-07"},{"cvss_score":7.8,"headline":"Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows","id":"CVE-2025-14821","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2012-4560","kev_date_added":null,"published":"2012-11-30"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2012-4562","kev_date_added":null,"published":"2012-11-30"},{"cvss_score":7.5,"headline":"Use after free in n/a","id":"CVE-2012-6063","kev_date_added":null,"published":"2012-11-30"},{"cvss_score":6.9,"headline":"libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds","id":"CVE-2026-3731","kev_date_added":null,"published":"2026-03-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"2026-09-01","vendors":["Red Hat"]},"summary":"A malicious username in libssh ProxyCommand can inject shell metacharacters, leading to environment variable exposure and potential code execution.","url":"https://insights.sbomify.com/CVE-2026-59846/"}