{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-63177 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-63177 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-63177 is a high-severity authentication bypass vulnerability in cisagov Malcolm, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-63177 and fix it if it is affected.\n\nWhat it is: CVE-2026-63177 is a high-severity authentication bypass vulnerability in cisagov Malcolm, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-63177 in the wild and no public exploit code.\n\nAffected product: cisagov Malcolm. 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-2026-63177/ (Markdown: https://insights.sbomify.com/CVE-2026-63177/index.md)","id":"CVE-2026-63177","markdown":"https://insights.sbomify.com/CVE-2026-63177/index.md","name":"CVE-2026-63177","record":{"aliases":["GHSA-m5fr-rv3h-xg2r"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Network traffic analysis tool","requires_auth":"low_privilege","summary":"Low-privilege users can bypass RBAC restrictions in Malcolm by exploiting URI normalization differences between Nginx and Lua, gaining unauthorized access to restricted features.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, role-based access control enforced in the Nginx OpenResty Lua layer evaluates the raw, unnormalized `ngx.var.request_uri`, while Nginx itself routes requests using the normalized path. An authenticated low-privilege user can prepend a traversal segment (for example `/x/../upload/...`) so that Nginx routes the request to a restricted backend while the Lua role check fails to match any rule and falls open, granting access it should deny. Version 26.07.0 fixes the issue.","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":"Malcolm Vulnerable to Authorization Bypass via URI Normalization Differential in Nginx Lua RBAC","id":"CVE-2026-63177","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Missing authorization in onyx","id":"CVE-2026-63178"},"packages":[],"prev":{"headline":"Cross-Capture Session Data Leakage Due to Shared Mutable State in Looklyloo - PlaywrightCapture","id":"CVE-2026-63175"},"products":["Malcolm"],"published":"2026-08-11","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":"2026-10-02","vendors":["cisagov"]},"summary":"Low-privilege users can bypass RBAC restrictions in Malcolm by exploiting URI normalization differences between Nginx and Lua, gaining unauthorized access to restricted features.","url":"https://insights.sbomify.com/CVE-2026-63177/"}