{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-22693 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-22693 is a medium-severity vulnerability in harfbuzz, published on 10 Jan 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-2026-22693 and fix it if it is affected.\n\nWhat it is: CVE-2026-22693 is a medium-severity vulnerability in harfbuzz, published on 10 Jan 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-2026-22693 in the wild and no public exploit code.\n\nAffected product: harfbuzz. 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-2026-22693/ (Markdown: https://insights.sbomify.com/CVE-2026-22693/index.md)","id":"CVE-2026-22693","markdown":"https://insights.sbomify.com/CVE-2026-22693/index.md","name":"CVE-2026-22693","record":{"aliases":["AZL-73970","DEBIAN-CVE-2026-22693","ECHO-7ecb-7a01-33a3","GHSA-xvjr-f2r9-c7ww","JLSEC-2026-777","MGASA-2026-0015","OESA-2026-1149","OESA-2026-1150","OESA-2026-1203","OESA-2026-1204","RHSA-2026:7701","ROOT-OS-DEBIAN-11-CVE-2026-22693","ROOT-OS-DEBIAN-12-CVE-2026-22693","SUSE-SU-2026:0287-1","SUSE-SU-2026:20762-1","SUSE-SU-2026:20922-1","UBUNTU-CVE-2026-22693","openSUSE-SU-2026:10065-1","openSUSE-SU-2026:20409-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Text shaping library","requires_auth":"none","summary":"A null pointer dereference in HarfBuzz allows attackers to cause a denial of service via memory allocation failures.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"harfbuzz","vendor":"harfbuzz_project"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault. This issue has been patched in version 12.3.0.","ecosystems":["Red Hat:hummingbird:1","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Server 16.0","SUSE:Linux Enterprise Server for SAP applications 16.0","SUSE:Linux Micro 6.2","openSUSE:Leap 15.6","openSUSE:Leap 16.0","openSUSE:Tumbleweed"],"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":"Null Pointer Dereference in SubtableUnicodesCache::create leading to DoS","id":"CVE-2026-22693","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":14,"n_references":2,"next":{"headline":"AliasVault is Missing Origin Validation in Android Passkey Credential Provider","id":"CVE-2026-22694"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/redhat/harfbuzz","source":"RHSA-2026:7701"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz-cairo","purl":"pkg:rpm/redhat/harfbuzz-cairo","source":"RHSA-2026:7701"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz-devel","purl":"pkg:rpm/redhat/harfbuzz-devel","source":"RHSA-2026:7701"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz-gpu","purl":"pkg:rpm/redhat/harfbuzz-gpu","source":"RHSA-2026:7701"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz-icu","purl":"pkg:rpm/redhat/harfbuzz-icu","source":"RHSA-2026:7701"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz-raster","purl":"pkg:rpm/redhat/harfbuzz-raster","source":"RHSA-2026:7701"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:14.1.0-2.hum1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz-vector","purl":"pkg:rpm/redhat/harfbuzz-vector","source":"RHSA-2026:7701"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","fixed":["8.3.0-150600.3.3.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/suse/harfbuzz\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7","source":"SUSE-SU-2026:0287-1"},{"ecosystem":"SUSE:Linux Enterprise Server 16.0","fixed":["11.4.5-160000.1.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/suse/harfbuzz\u0026distro=SUSE%20Linux%20Enterprise%20Server%2016.0","source":"SUSE-SU-2026:20922-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","fixed":["11.4.5-160000.1.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/suse/harfbuzz\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0","source":"SUSE-SU-2026:20922-1"},{"ecosystem":"SUSE:Linux Micro 6.2","fixed":["11.4.5-160000.1.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/suse/harfbuzz\u0026distro=SUSE%20Linux%20Micro%206.2","source":"SUSE-SU-2026:20762-1"},{"ecosystem":"openSUSE:Leap 15.6","fixed":["8.3.0-150600.3.3.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/opensuse/harfbuzz\u0026distro=openSUSE%20Leap%2015.6","source":"SUSE-SU-2026:0287-1"},{"ecosystem":"openSUSE:Leap 16.0","fixed":["11.4.5-160000.1.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/opensuse/harfbuzz\u0026distro=openSUSE%20Leap%2016.0","source":"openSUSE-SU-2026:20409-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["12.3.0-2.1"],"introduced":["0"],"last_affected":[],"package":"harfbuzz","purl":"pkg:rpm/opensuse/harfbuzz\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10065-1"}],"prev":{"headline":"October CMS: Twig Sandbox Bypass via Collection Methods","id":"CVE-2026-22692"},"products":["harfbuzz"],"published":"2026-01-10","related":[{"cvss_score":9.3,"headline":"HarfBuzz heap-buffer-overflow on hb_cairo_glyphs_from_buffer","id":"CVE-2024-56732","kev_date_added":null,"published":"2024-12-27"},{"cvss_score":7.6,"headline":"Memory corruption in n/a","id":"CVE-2015-8947","kev_date_added":null,"published":"2016-07-19"},{"cvss_score":6.5,"headline":"Denial of service in n/a","id":"CVE-2015-9274","kev_date_added":null,"published":"2018-11-15"}],"sources":[{"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":"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-12","vendors":["harfbuzz"]},"summary":"A null pointer dereference in HarfBuzz allows attackers to cause a denial of service via memory allocation failures.","url":"https://insights.sbomify.com/CVE-2026-22693/"}