{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-48959 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-48959 is a high-severity denial of service vulnerability in PMQS IO::Uncompress::Unzip, published on 27 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-2026-48959 and fix it if it is affected.\n\nWhat it is: CVE-2026-48959 is a high-severity denial of service vulnerability in PMQS IO::Uncompress::Unzip, published on 27 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-2026-48959 in the wild and no public exploit code.\n\nAffected product: PMQS IO::Uncompress::Unzip. 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-2026-48959/ (Markdown: https://insights.sbomify.com/CVE-2026-48959/index.md)","id":"CVE-2026-48959","markdown":"https://insights.sbomify.com/CVE-2026-48959/index.md","name":"CVE-2026-48959","record":{"aliases":["AZL-89307","BELL-CVE-2026-48959","DEBIAN-CVE-2026-48959","ECHO-c2dc-1c4d-e477","GHSA-7vxx-5gqr-7r44","ROOT-OS-DEBIAN-11-CVE-2026-48959","UBUNTU-CVE-2026-48959"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl IO::Uncompress::Unzip","requires_auth":"none","summary":"An attacker can cause CPU exhaustion in Perl applications using IO::Uncompress::Unzip by providing a malicious zip file, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","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-407","name":"Inefficient Algorithmic Complexity"}],"description":"IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward.\n\nfastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration.\n\nExtracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip-\u003enew($zip, Name =\u003e $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.","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":"IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward","id":"CVE-2026-48959","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Denial of service in IO::Compress","id":"CVE-2026-48961"},"packages":[],"prev":{"headline":"Joomla! Core - [20260712] - Incorrect Access Control in com_fields webservice endpoints","id":"CVE-2026-48958"},"products":["IO::Uncompress::Unzip"],"published":"2026-05-27","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":"2026-05-29","vendors":["PMQS"]},"summary":"An attacker can cause CPU exhaustion in Perl applications using IO::Uncompress::Unzip by providing a malicious zip file, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2026-48959/"}