{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27171 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-27171 is a low-severity denial of service vulnerability in zlib, published on 18 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-27171 and fix it if it is affected.\n\nWhat it is: CVE-2026-27171 is a low-severity denial of service vulnerability in zlib, published on 18 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27171 exists.\n\nAffected product: zlib. 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-2026-27171/ (Markdown: https://insights.sbomify.com/CVE-2026-27171/index.md)","id":"CVE-2026-27171","markdown":"https://insights.sbomify.com/CVE-2026-27171/index.md","name":"CVE-2026-27171","record":{"aliases":["ALPINE-CVE-2026-27171","AZL-77886","AZL-77981","AZL-77985","AZL-77988","AZL-77990","AZL-77993","AZL-78000","AZL-78009","AZL-78012","AZL-78014","AZL-78017","AZL-78021","AZL-78024","AZL-78027","AZL-78120","AZL-78179","AZL-78203","BELL-CVE-2026-27171","CLEANSTART-2026-ST77955","DEBIAN-CVE-2026-27171","ECHO-e10b-f259-a98b","GHSA-h858-mf2m-8jf4","JLSEC-2026-480","MGASA-2026-0076","MINI-hwjj-mj9h-qh5g","OESA-2026-1583","OESA-2026-1584","OESA-2026-1585","OESA-2026-1586","ROOT-OS-DEBIAN-11-CVE-2026-27171","ROOT-OS-DEBIAN-12-CVE-2026-27171","ROOT-OS-DEBIAN-13-CVE-2026-27171","SUSE-SU-2026:0783-1","UBUNTU-CVE-2026-27171","USN-8706-1","openSUSE-SU-2026:10617-1","openSUSE-SU-2026:12179-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"zlib compression library","requires_auth":"none","summary":"An attacker can cause CPU exhaustion in applications using zlib via specific CRC functions due to a missing loop termination condition.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"zlib","vendor":"zlib"}],"cvss":{"score":2.9,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.","ecosystems":["SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Module for Development Tools 15 SP7","openSUSE:Leap 15.6","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Denial of service in zlib","id":"CVE-2026-27171","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":5,"next":{"headline":"Apache Camel-Consul component vulnerable to Deserialization of Untrusted Data","id":"CVE-2026-27172"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["1.2.13-150500.4.6.1"],"introduced":["0"],"last_affected":[],"package":"zlib","purl":"pkg:rpm/suse/zlib\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2026:0783-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","fixed":["1.2.13-150500.4.6.1"],"introduced":["0"],"last_affected":[],"package":"zlib","purl":"pkg:rpm/suse/zlib\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7","source":"SUSE-SU-2026:0783-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP7","fixed":["1.2.13-150500.4.6.1"],"introduced":["0"],"last_affected":[],"package":"zlib","purl":"pkg:rpm/suse/zlib\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7","source":"SUSE-SU-2026:0783-1"},{"ecosystem":"openSUSE:Leap 15.6","fixed":["1.2.13-150500.4.6.1"],"introduced":["0"],"last_affected":[],"package":"zlib","purl":"pkg:rpm/opensuse/zlib\u0026distro=openSUSE%20Leap%2015.6","source":"SUSE-SU-2026:0783-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["2.15.0-1.1"],"introduced":["0"],"last_affected":[],"package":"freetype2","purl":"pkg:rpm/opensuse/freetype2\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:12179-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.3.1-2.1"],"introduced":["0"],"last_affected":[],"package":"zlib","purl":"pkg:rpm/opensuse/zlib\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10617-1"}],"prev":{"headline":"OpenSift: SSRF risk in URL ingestion endpoint","id":"CVE-2026-27170"},"products":["zlib"],"published":"2026-02-18","related":[{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2002-0059","kev_date_added":null,"published":"2002-06-25"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2005-2096","kev_date_added":null,"published":"2005-07-06"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2003-0107","kev_date_added":null,"published":"2004-09-01"},{"cvss_score":5,"headline":"Denial of service in n/a","id":"CVE-2005-1849","kev_date_added":null,"published":"2005-07-26"},{"cvss_score":4.6,"headline":"zlib \u003c= 1.3.1.2 untgz Global Buffer Overflow in TGZfname()","id":"CVE-2026-22184","kev_date_added":null,"published":"2026-01-07"},{"cvss_score":2.1,"headline":"Denial of service in n/a","id":"CVE-2004-0797","kev_date_added":null,"published":"2004-09-14"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-02-18","vendors":["zlib"]},"summary":"An attacker can cause CPU exhaustion in applications using zlib via specific CRC functions due to a missing loop termination condition.","url":"https://insights.sbomify.com/CVE-2026-27171/"}