{"answers":{"affected":"It affects 11 products.","exploited":"There is no known exploitation of CVE-2026-59842 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-59842 is a low-severity vulnerability in Redhat Enterprise Linux, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-59842 and fix it if it is affected.\n\nWhat it is: CVE-2026-59842 is a low-severity vulnerability in Redhat Enterprise Linux, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-59842 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-2026-59842/ (Markdown: https://insights.sbomify.com/CVE-2026-59842/index.md)","id":"CVE-2026-59842","markdown":"https://insights.sbomify.com/CVE-2026-59842/index.md","name":"CVE-2026-59842","record":{"aliases":["BELL-CVE-2026-59842","DEBIAN-CVE-2026-59842","GHSA-x94w-cg8g-g593","MINI-c4mg-2422-vx22"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"SSH library","requires_auth":"none","summary":"A remote unauthenticated attacker can disclose small amounts of server memory via an out-of-bounds heap read during GSSAPI key exchange in libssh.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"libssh","vendor":"libssh"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_for_els","vendor":"redhat"},{"product":"enterprise_linux_for_eus","vendor":"redhat"},{"product":"enterprise_linux_for_ibm_z_systems","vendor":"redhat"},{"product":"enterprise_linux_for_ibm_z_systems_els","vendor":"redhat"},{"product":"enterprise_linux_for_ibm_z_systems_eus","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian_els","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian_eus","vendor":"redhat"},{"product":"hardened_images","vendor":"redhat"}],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.","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 short gssapi curve25519 public key","id":"CVE-2026-59842","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_ibm_z_systems_eus","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:hardened_images"],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Libssh: libssh: denial of service via zero advertised channel packet size","id":"CVE-2026-59843"},"packages":[],"prev":{"headline":"Security feature bypass in FortiSIEMWindowsAgent","id":"CVE-2026-59841"},"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":"2026-08-19","vendors":["Red Hat"]},"summary":"A remote unauthenticated attacker can disclose small amounts of server memory via an out-of-bounds heap read during GSSAPI key exchange in libssh.","url":"https://insights.sbomify.com/CVE-2026-59842/"}