{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34379 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-34379 is a high-severity memory corruption vulnerability in Openexr Openexr, published on 6 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-34379 and fix it if it is affected.\n\nWhat it is: CVE-2026-34379 is a high-severity memory corruption vulnerability in Openexr Openexr, published on 6 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34379 exists.\n\nAffected product: Openexr Openexr. 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-2026-34379/ (Markdown: https://insights.sbomify.com/CVE-2026-34379/index.md)","id":"CVE-2026-34379","markdown":"https://insights.sbomify.com/CVE-2026-34379/index.md","name":"CVE-2026-34379","record":{"aliases":["BELL-CVE-2026-34379","DEBIAN-CVE-2026-34379","GHSA-w88v-vqhq-5p24","JLSEC-2026-143","ROOT-OS-DEBIAN-11-CVE-2026-34379","ROOT-OS-DEBIAN-12-CVE-2026-34379","ROOT-OS-DEBIAN-13-CVE-2026-34379","UBUNTU-CVE-2026-34379"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenEXR image library","requires_auth":"none","summary":"A misaligned memory write in OpenEXR's DWA decoder can cause crashes or potential code execution when processing malicious EXR files.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"openexr","vendor":"openexr"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"},{"id":"CWE-475","name":"Undefined Behavior for Input to API"},{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-704","name":"Incorrect Type Conversion or Cast"}],"description":"OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, a misaligned memory write vulnerability exists in LossyDctDecoder_execute() in src/lib/OpenEXRCore/internal_dwa_decoder.h:749. When decoding a DWA or DWAB-compressed EXR file containing a FLOAT-type channel, the decoder performs an in-place HALF→FLOAT conversion by casting an unaligned uint8_t * row pointer to float * and writing through it. Because the row buffer may not be 4-byte aligned, this constitutes undefined behavior under the C standard and crashes immediately on architectures that enforce alignment (ARM, RISC-V, etc.). On x86 it is silently tolerated at runtime but remains exploitable via compiler optimizations that assume aligned access. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.","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":"OpenEXR has a misaligned write in LossyDctDecoder_execute leading to undefined behavior (DWA/DWAB decompression)","id":"CVE-2026-34379","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"openexr:openexr","products":["openexr:openexr"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Integer overflow in openexr","id":"CVE-2026-34380"},"packages":[],"prev":{"headline":"OpenEXR has a signed integer overflow in generic_unpack() when parsing EXR files with crafted negative dataWindow.min.x","id":"CVE-2026-34378"},"products":["openexr"],"published":"2026-04-06","related":[{"cvss_score":9.1,"headline":"OpenEXR Heap Overflow in Scanline Deep Data Parsing","id":"CVE-2023-5841","kev_date_added":null,"published":"2024-02-01"},{"cvss_score":8.8,"headline":"OpenEXR is Vulnerable to Integer overflow in ImageChannel::resize leads to heap OOB write via OpenEXRUtil public API","id":"CVE-2026-41142","kev_date_added":null,"published":"2026-05-07"},{"cvss_score":8.8,"headline":"OpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansion","id":"CVE-2026-42216","kev_date_added":null,"published":"2026-05-07"},{"cvss_score":8.8,"headline":"OpenEXR invalid write","id":"CVE-2017-9111","kev_date_added":null,"published":"2017-05-21"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2017-9113","kev_date_added":null,"published":"2017-05-21"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2017-9115","kev_date_added":null,"published":"2017-05-21"},{"cvss_score":8.7,"headline":"OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)","id":"CVE-2026-34543","kev_date_added":null,"published":"2026-04-01"}],"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":"2026-07-15","vendors":["AcademySoftwareFoundation"]},"summary":"A misaligned memory write in OpenEXR's DWA decoder can cause crashes or potential code execution when processing malicious EXR files.","url":"https://insights.sbomify.com/CVE-2026-34379/"}