{"answers":{"affected":"2 open source packages ship an affected version, including adm-zip.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77301 exists.","fix":"Upgrade adm-zip to 0.6.1 or later.","what":"CVE-2026-77301 is a high-severity denial of service vulnerability in cthackers adm-zip, published on 18 Sep 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-2026-77301 and fix it if it is affected.\n\nWhat it is: CVE-2026-77301 is a high-severity denial of service vulnerability in cthackers adm-zip, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77301 exists.\n\nAffected packages and fixed versions:\n- adm-zip (npm): affected all versions; fixed in 0.6.1\n- adm-zip (npm): affected all versions; fixed in 0.6.1\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-2026-77301/ (Markdown: https://insights.sbomify.com/CVE-2026-77301/index.md)","id":"CVE-2026-77301","markdown":"https://insights.sbomify.com/CVE-2026-77301/index.md","name":"CVE-2026-77301","record":{"aliases":["CLEANSTART-2026-BF81327","CLEANSTART-2026-PG50954","CLSA-2026-1790162622","CLSA-2026-1790166345","CLSA-2026-1790180021","CLSA-2026-1791626782","ECHO-92bb-2729-11c2","GHSA-7q85-xj36-vmfc","MINI-26r4-32jx-vjmm","MINI-3546-rr29-458p","MINI-58j2-42hh-8f5m","MINI-5vfj-v399-w2jr","MINI-74jg-93x3-vxf5","MINI-8p94-c2xq-94rv","MINI-9xqf-x8q2-5h95","MINI-c2rg-f64w-77h2","MINI-qq82-hg8q-54f5","MINI-r37h-4fx9-cj9x","MINI-v4wc-c9pf-qj5r","MINI-vcw8-44vr-83g3","MINI-w9cj-gph6-v8c6","MINI-xxm8-3467-j4gq","ROOT-APP-NPM-CVE-2026-77301"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript ZIP library","requires_auth":"none","summary":"Attackers can cause memory exhaustion and service termination by providing crafted ZIP archives with inflated uncompressed size declarations to applications using adm-zip.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, getData() in zipEntry.js trusts an entry's central-directory uncompressed size and allocates output memory before validating that value against the actual compressed data and decompression result. A small crafted ZIP can declare a multi-gigabyte uncompressed size, causing Buffer.alloc and decompression handling to commit excessive resident memory before CRC validation reports an error. Applications that read entries from untrusted archives can therefore be terminated by the operating system or suffer service-wide memory exhaustion. This issue is fixed in version 0.6.1.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"adm-zip: Uncontrolled memory allocation via the declared uncompressed size (DoS)","id":"CVE-2026-77301","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"jackson-databind: Incomplete fix for CVE-2026-54514: eager DNS resolution (SSRF) still present in InetAddress deserialization","id":"CVE-2026-77310"},"packages":[{"ecosystem":"npm","fixed":["0.6.1"],"introduced":["0"],"last_affected":[],"package":"adm-zip","purl":null,"source":"GHSA-7q85-xj36-vmfc"},{"ecosystem":"npm","fixed":["0.6.1"],"introduced":["0"],"last_affected":[],"package":"adm-zip","purl":"pkg:npm/adm-zip","source":"GHSA-7q85-xj36-vmfc"}],"prev":{"headline":"SeaweedFS S3 OIDC Bearer authentication bypasses IAM role trust policy","id":"CVE-2026-77298"},"products":["adm-zip"],"published":"2026-09-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["cthackers"]},"summary":"Attackers can cause memory exhaustion and service termination by providing crafted ZIP archives with inflated uncompressed size declarations to applications using adm-zip.","url":"https://insights.sbomify.com/CVE-2026-77301/"}