{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-48851 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-48851 is a low-severity vulnerability in PuTTY, published on 25 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-48851 and fix it if it is affected.\n\nWhat it is: CVE-2026-48851 is a low-severity vulnerability in PuTTY, published on 25 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-48851 in the wild and no public exploit code.\n\nAffected product: PuTTY. 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-2026-48851/ (Markdown: https://insights.sbomify.com/CVE-2026-48851/index.md)","id":"CVE-2026-48851","markdown":"https://insights.sbomify.com/CVE-2026-48851/index.md","name":"CVE-2026-48851","record":{"aliases":["DEBIAN-CVE-2026-48851","GHSA-5fwp-h8j4-xmhm","UBUNTU-CVE-2026-48851"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"PuTTY SSH client","requires_auth":"none","summary":"PuTTY fails to clear trust status between proxy authentication and main session, allowing bypass of visual trust indicators for TELNET data.","user_interaction":"required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"putty","vendor":"putty"}],"cvss":{"score":3.1,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-451","name":"User Interface (UI) Misrepresentation of Critical Information"}],"description":"PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.","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":"Security feature bypass in PuTTY","id":"CVE-2026-48851","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Denial of service in PuTTY","id":"CVE-2026-48852"},"packages":[],"prev":{"headline":"Use after free in PuTTY","id":"CVE-2026-48850"},"products":["PuTTY"],"published":"2026-05-25","related":[{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2004-1008","kev_date_added":null,"published":"2004-12-01"},{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2019-17067","kev_date_added":null,"published":"2019-10-01"},{"cvss_score":8.1,"headline":"Auth bypass in n/a","id":"CVE-2021-36367","kev_date_added":null,"published":"2021-07-09"},{"cvss_score":7.8,"headline":"Other in n/a","id":"CVE-2016-6167","kev_date_added":null,"published":"2017-01-30"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-33500","kev_date_added":null,"published":"2021-05-21"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2005-0467","kev_date_added":null,"published":"2005-02-21"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2004-1440","kev_date_added":null,"published":"2005-02-13"}],"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":"2026-05-26","vendors":["PuTTY"]},"summary":"PuTTY fails to clear trust status between proxy authentication and main session, allowing bypass of visual trust indicators for TELNET data.","url":"https://insights.sbomify.com/CVE-2026-48851/"}