{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44673 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-44673 is a high-severity vulnerability in CESNET libyang, published on 14 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-2026-44673 and fix it if it is affected.\n\nWhat it is: CVE-2026-44673 is a high-severity vulnerability in CESNET libyang, published on 14 May 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-2026-44673 exists.\n\nAffected product: CESNET libyang. 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-2026-44673/ (Markdown: https://insights.sbomify.com/CVE-2026-44673/index.md)","id":"CVE-2026-44673","markdown":"https://insights.sbomify.com/CVE-2026-44673/index.md","name":"CVE-2026-44673","record":{"aliases":["ALSA-2026:24545","ALSA-2026:24758","ALSA-2026:25051","AZL-86816","DEBIAN-CVE-2026-44673","MINI-9h7p-9h5w-5m34","RHSA-2026:24545","RHSA-2026:24758","RHSA-2026:25051","RHSA-2026:49666","RHSA-2026:51339","RHSA-2026:51351","RHSA-2026:51368","RHSA-2026:65467","RHSA-2026:65477","RHSA-2026:65508","RLSA-2026:24545","RLSA-2026:24758","RLSA-2026:25051","SUSE-SU-2026:2381-1","openSUSE-SU-2026:10880-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"YANG data modeling library","requires_auth":"none","summary":"An integer overflow in libyang's LYB parser allows attackers to trigger heap buffer overflows, potentially leading to code execution or crashes.","user_interaction":"not_required","vuln_class":"integer_overflow"},"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-190","name":"Integer Overflow or Wraparound"}],"description":"libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB data to any libyang consumer (NETCONF server, sysrepo, etc.) can trigger a crash or potential heap corruption. This vulnerability is fixed in SO 5.2.15.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::crb","Red Hat:enterprise_linux_eus:10.0","Red Hat:rhel_aus:8.4::appstream","Red Hat:rhel_aus:8.6::appstream","Red Hat:rhel_e4s:8.8::appstream","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus_long_life:8.4::appstream","Red Hat:rhel_eus_long_life:8.6::appstream","Red Hat:rhel_tus:8.8::appstream","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9","SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","SUSE:Linux Enterprise Server 15 SP4-LTSS","SUSE:Linux Enterprise Server for SAP Applications 15 SP4","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":"libyang: lyb_read_string() integer overflow → heap buffer overflow","id":"CVE-2026-44673","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":46,"n_references":1,"next":{"headline":"Tuist: IDOR in preview deletion API allows cross-tenant deletion of any preview by UUID","id":"CVE-2026-44678"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/almalinux/libyang","source":"ALSA-2026:24758"},{"ecosystem":"AlmaLinux:10","fixed":["2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-devel","purl":"pkg:rpm/almalinux/libyang-devel","source":"ALSA-2026:24758"},{"ecosystem":"AlmaLinux:10","fixed":["2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-devel-doc","purl":"pkg:rpm/almalinux/libyang-devel-doc","source":"ALSA-2026:24758"},{"ecosystem":"AlmaLinux:8","fixed":["1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/almalinux/libyang","source":"ALSA-2026:24545"},{"ecosystem":"AlmaLinux:9","fixed":["2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/almalinux/libyang","source":"ALSA-2026:25051"},{"ecosystem":"AlmaLinux:9","fixed":["2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-devel","purl":"pkg:rpm/almalinux/libyang-devel","source":"ALSA-2026:25051"},{"ecosystem":"AlmaLinux:9","fixed":["2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-devel-doc","purl":"pkg:rpm/almalinux/libyang-devel-doc","source":"ALSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:24758"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-debuginfo","purl":"pkg:rpm/redhat/libyang-debuginfo","source":"RHSA-2026:24758"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-debugsource","purl":"pkg:rpm/redhat/libyang-debugsource","source":"RHSA-2026:24758"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-devel","purl":"pkg:rpm/redhat/libyang-devel","source":"RHSA-2026:24758"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-devel-doc","purl":"pkg:rpm/redhat/libyang-devel-doc","source":"RHSA-2026:24758"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang-tools-debuginfo","purl":"pkg:rpm/redhat/libyang-tools-debuginfo","source":"RHSA-2026:24758"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:24545"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"libyang-cpp-debuginfo","purl":"pkg:rpm/redhat/libyang-cpp-debuginfo","source":"RHSA-2026:24545"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"libyang-debuginfo","purl":"pkg:rpm/redhat/libyang-debuginfo","source":"RHSA-2026:24545"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"libyang-debugsource","purl":"pkg:rpm/redhat/libyang-debugsource","source":"RHSA-2026:24545"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-libyang-debuginfo","purl":"pkg:rpm/redhat/python3-libyang-debuginfo","source":"RHSA-2026:24545"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-debuginfo","purl":"pkg:rpm/redhat/libyang-debuginfo","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-debugsource","purl":"pkg:rpm/redhat/libyang-debugsource","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-debuginfo","purl":"pkg:rpm/redhat/libyang-debuginfo","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-debugsource","purl":"pkg:rpm/redhat/libyang-debugsource","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-devel","purl":"pkg:rpm/redhat/libyang-devel","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:2.1.148-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang-devel-doc","purl":"pkg:rpm/redhat/libyang-devel-doc","source":"RHSA-2026:25051"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:2.1.148-2.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:49666"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:2.1.148-2.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"libyang-debuginfo","purl":"pkg:rpm/redhat/libyang-debuginfo","source":"RHSA-2026:49666"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:2.1.148-2.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"libyang-debugsource","purl":"pkg:rpm/redhat/libyang-debugsource","source":"RHSA-2026:49666"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:2.1.148-2.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"libyang-tools-debuginfo","purl":"pkg:rpm/redhat/libyang-tools-debuginfo","source":"RHSA-2026:49666"},{"ecosystem":"Red Hat:rhel_aus:8.4::appstream","fixed":["0:1.0.184-1.el8_4.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:51351"},{"ecosystem":"Red Hat:rhel_aus:8.6::appstream","fixed":["0:1.0.184-1.el8_6.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:51368"},{"ecosystem":"Red Hat:rhel_e4s:8.8::appstream","fixed":["0:1.0.184-1.el8_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:51339"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:2.1.148-1.el9_2.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:65477"},{"ecosystem":"Red Hat:rhel_e4s:9.4::appstream","fixed":["0:2.1.148-1.el9_4.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:65467"},{"ecosystem":"Red Hat:rhel_eus:9.6::appstream","fixed":["0:2.1.148-1.el9_6.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:65508"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.4::appstream","fixed":["0:1.0.184-1.el8_4.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:51351"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.6::appstream","fixed":["0:1.0.184-1.el8_6.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:51368"},{"ecosystem":"Red Hat:rhel_tus:8.8::appstream","fixed":["0:1.0.184-1.el8_8.1"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/redhat/libyang","source":"RHSA-2026:51339"},{"ecosystem":"Rocky Linux:10","fixed":["0:2.1.148-4.el10_2"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/rocky-linux/libyang?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:24758"},{"ecosystem":"Rocky Linux:8","fixed":["0:1.0.184-2.el8_10"],"introduced":["0"],"last_affected":[],"package":"libyang","purl":"pkg:rpm/rocky-linux/libyang?distro=rocky-linux-8\u0026epoch=0","source":"RLSA-2026:24545"}],"prev":{"headline":"mapfish-print: Remote Code Injection (RCE) in Dynamic table","id":"CVE-2026-44672"},"products":["libyang"],"published":"2026-05-14","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":"2026-09-09","vendors":["CESNET"]},"summary":"An integer overflow in libyang's LYB parser allows attackers to trigger heap buffer overflows, potentially leading to code execution or crashes.","url":"https://insights.sbomify.com/CVE-2026-44673/"}