{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-47178 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-47178 is a medium-severity memory corruption vulnerability in strukturag libheif, published on 21 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-47178 and fix it if it is affected.\n\nWhat it is: CVE-2026-47178 is a medium-severity memory corruption vulnerability in strukturag libheif, published on 21 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-47178 in the wild and no public exploit code.\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-2026-47178/ (Markdown: https://insights.sbomify.com/CVE-2026-47178/index.md)","id":"CVE-2026-47178","markdown":"https://insights.sbomify.com/CVE-2026-47178/index.md","name":"CVE-2026-47178","record":{"aliases":["DEBIAN-CVE-2026-47178","ECHO-8449-98f8-ce75","GHSA-5x55-x5pf-9c6g","JLSEC-2026-1095","ROOT-OS-DEBIAN-11-CVE-2026-47178","UBUNTU-CVE-2026-47178","USN-8479-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"HEIF/AVIF image library","requires_auth":"none","summary":"A crafted HEIF file triggers a heap out-of-bounds write in libheif, allowing attackers to overwrite vtable pointers and achieve arbitrary code execution.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"libheif","vendor":"struktur"}],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.19.0 through 1.21.2, a crafted HEIF file (uncompressed `unci` codec, tiled, component-interleaved, 4:2:0) triggers a heap out-of-bounds write in libheif's uncompressed tile decoder. The write overwrites the C++ vtable pointer of an adjacent `unc_decoder_component_interleave` object; the next virtual call dispatches to an attacker-chosen address. Version 1.22.0 patches the issue.","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":"libheif has Heap Out Of Bounds Write in unci subsystem","id":"CVE-2026-47178","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Arcane: Authenticated Arbitrary Host File Read via Docker Compose Include Directives in Arcane","id":"CVE-2026-47179"},"packages":[],"prev":{"headline":"Quest Bot: Ticket transcripts can disclose private ticket contents to a lower-visibility channel","id":"CVE-2026-47177"},"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-22","vendors":["strukturag"]},"summary":"A crafted HEIF file triggers a heap out-of-bounds write in libheif, allowing attackers to overwrite vtable pointers and achieve arbitrary code execution.","url":"https://insights.sbomify.com/CVE-2026-47178/"}