{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47709 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-47709 is a medium-severity vulnerability in strukturag libheif, published on 21 Jul 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-2026-47709 and fix it if it is affected.\n\nWhat it is: CVE-2026-47709 is a medium-severity vulnerability in strukturag libheif, published on 21 Jul 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-2026-47709 exists.\n\nAffected product: strukturag libheif. 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-2026-47709/ (Markdown: https://insights.sbomify.com/CVE-2026-47709/index.md)","id":"CVE-2026-47709","markdown":"https://insights.sbomify.com/CVE-2026-47709/index.md","name":"CVE-2026-47709","record":{"aliases":["BELL-CVE-2026-47709","DEBIAN-CVE-2026-47709","ECHO-4429-8097-b109","GHSA-4h72-vqgp-9376","JLSEC-2026-1099","UBUNTU-CVE-2026-47709"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"HEIF/AVIF image library","requires_auth":"none","summary":"A malformed HEIF image causes a null pointer dereference in libheif, leading to application crashes during image tiling retrieval.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"libheif","vendor":"struktur"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe \u0026\u0026 uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe","id":"CVE-2026-47709","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Dulwich doesn't sanitize commit subjects in `porcelain.format_patch`","id":"CVE-2026-47712"},"packages":[],"prev":{"headline":"MCP-for-Stata: Command injection via log_file_name parameter in Stata command wrapper","id":"CVE-2026-47708"},"products":["libheif"],"published":"2026-07-21","related":[{"cvss_score":8.8,"headline":"libheif: Heap-Buffer-Overflow Write in Grid Tile Chroma Compositing","id":"CVE-2026-32740","kev_date_added":null,"published":"2026-05-19"},{"cvss_score":8.8,"headline":"Null dereference in n/a","id":"CVE-2023-49460","kev_date_added":null,"published":"2023-12-07"},{"cvss_score":8.8,"headline":"Null dereference in n/a","id":"CVE-2023-49462","kev_date_added":null,"published":"2023-12-07"},{"cvss_score":8.8,"headline":"Null dereference in n/a","id":"CVE-2023-49463","kev_date_added":null,"published":"2023-12-07"},{"cvss_score":8.8,"headline":"Null dereference in n/a","id":"CVE-2023-49464","kev_date_added":null,"published":"2023-12-07"},{"cvss_score":8.8,"headline":"Denial of service in n/a","id":"CVE-2020-19498","kev_date_added":null,"published":"2021-07-21"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2020-19499","kev_date_added":null,"published":"2021-07-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-07-22","vendors":["strukturag"]},"summary":"A malformed HEIF image causes a null pointer dereference in libheif, leading to application crashes during image tiling retrieval.","url":"https://insights.sbomify.com/CVE-2026-47709/"}