{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27447 exists.","fix":"No fix published yet.","what":"CVE-2026-27447 is a medium-severity authentication bypass vulnerability in OpenPrinting cups, published on 3 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-27447 and fix it if it is affected.\n\nWhat it is: CVE-2026-27447 is a medium-severity authentication bypass vulnerability in OpenPrinting cups, published on 3 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27447 exists.\n\nAffected product: OpenPrinting cups. 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-2026-27447/ (Markdown: https://insights.sbomify.com/CVE-2026-27447/index.md)","id":"CVE-2026-27447","markdown":"https://insights.sbomify.com/CVE-2026-27447/index.md","name":"CVE-2026-27447","record":{"aliases":["ALPINE-CVE-2026-27447","AZL-81822","BELL-CVE-2026-27447","CLSA-2026-1778141904","CLSA-2026-1778142413","CLSA-2026-1778253061","CLSA-2026-1778662564","CLSA-2026-1779215547","CLSA-2026-1779215980","CLSA-2026-1779436377","CLSA-2026-1780067463","DEBIAN-CVE-2026-27447","ECHO-5de4-11c3-45f3","GHSA-v987-m8hp-phj9","ROOT-OS-DEBIAN-12-CVE-2026-27447","ROOT-OS-DEBIAN-13-CVE-2026-27447","UBUNTU-CVE-2026-27447"],"analysis":{"component_type":"server_software","fix_type":"no_fix_stated","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"CUPS printing system","requires_auth":"high_privilege","summary":"Unprivileged users can bypass authorization checks in CUPS by exploiting case-insensitive username comparisons to access restricted operations.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"cups","vendor":"openprinting"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup","id":"CVE-2026-27447","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback","id":"CVE-2026-27448"},"packages":[],"prev":{"headline":"Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation","id":"CVE-2026-27446"},"products":["cups"],"published":"2026-04-03","related":[{"cvss_score":8,"headline":"cups has Authentication bypass with AuthType Negotiate","id":"CVE-2025-58060","kev_date_added":null,"published":"2025-09-11"},{"cvss_score":6.5,"headline":"Path traversal in cups","id":"CVE-2026-34978","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":6.5,"headline":"cups: Remote DoS via null dereference","id":"CVE-2025-58364","kev_date_added":null,"published":"2025-09-11"},{"cvss_score":6.1,"headline":"OpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network","id":"CVE-2026-34980","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":6,"headline":"OpenPrinting CUPS vulnerable to stack based out-of-bound write","id":"CVE-2025-61915","kev_date_added":null,"published":"2025-11-29"},{"cvss_score":5.7,"headline":"CUPS copy_model() creates a predictable PPD tempfile without O_EXCL/O_NOFOLLOW (symlink TOCTOU, lp → root)","id":"CVE-2026-55480","kev_date_added":null,"published":"2026-10-15"},{"cvss_score":5.3,"headline":"OpenPrinting CUPS: root-side banner file disclosure","id":"CVE-2026-61702","kev_date_added":null,"published":"2026-10-15"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-06","vendors":["OpenPrinting"]},"summary":"Unprivileged users can bypass authorization checks in CUPS by exploiting case-insensitive username comparisons to access restricted operations.","url":"https://insights.sbomify.com/CVE-2026-27447/"}