{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-43982 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-43982 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-43982 is a high-severity path traversal vulnerability in xyproto algernon, published on 26 May 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-2026-43982 and fix it if it is affected.\n\nWhat it is: CVE-2026-43982 is a high-severity path traversal vulnerability in xyproto algernon, published on 26 May 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-2026-43982 in the wild and no public exploit code.\n\nAffected product: xyproto algernon. 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-2026-43982/ (Markdown: https://insights.sbomify.com/CVE-2026-43982/index.md)","id":"CVE-2026-43982","markdown":"https://insights.sbomify.com/CVE-2026-43982/index.md","name":"CVE-2026-43982","record":{"aliases":["GHSA-2j2c-pv62-mmcp"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Go web server","requires_auth":"none","summary":"An attacker can write files to arbitrary locations outside the web root via the savein() function in Algernon web server.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Algernon is a small self-contained pure-Go web server. Prior to 1.17.6, uploadedFileSaveIn() in lua/upload/upload.go uses filepath.Join() with the caller-supplied directory but performs no boundary check after joining. A directory of ../../../tmp resolves cleanly to /tmp, outside the web root. This vulnerability is fixed in 1.17.6.","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":"Algernon: Path traversal file write via savein()","id":"CVE-2026-43982","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Pocket ID: OIDC refresh token flow bypasses authorization revocation, account disabling, and group restrictions","id":"CVE-2026-43983"},"packages":[],"prev":{"headline":"Algernon: Race Condition in handle() shared LState","id":"CVE-2026-43981"},"products":["algernon"],"published":"2026-05-26","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-26","vendors":["xyproto"]},"summary":"An attacker can write files to arbitrary locations outside the web root via the savein() function in Algernon web server.","url":"https://insights.sbomify.com/CVE-2026-43982/"}