{"answers":{"affected":"7 open source packages ship an affected version, including openexr. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34544 exists.","fix":"Upgrade openexr to 3.4.8 or later.","what":"CVE-2026-34544 is a high-severity vulnerability in Openexr Openexr, published on 1 Apr 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-2026-34544 and fix it if it is affected.\n\nWhat it is: CVE-2026-34544 is a high-severity vulnerability in Openexr Openexr, published on 1 Apr 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34544 exists.\n\nAffected packages and fixed versions:\n- openexr (PyPI): affected from 3.2.0 up to 3.2.6; no fix listed\n- openexr (PyPI): affected from 3.2.0 up to 3.2.6; no fix listed\n- openexr (PyPI): affected from 3.2.0; fixed in 3.4.8\n- openexr (PyPI): affected from 3.3.0 up to 3.3.8; no fix listed\n- openexr (PyPI): affected from 3.3.0 up to 3.3.8; no fix listed\n- openexr (PyPI): affected from 3.4.0; fixed in 3.4.8\n- openexr (PyPI): affected from 3.4.0; fixed in 3.4.8\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-2026-34544/ (Markdown: https://insights.sbomify.com/CVE-2026-34544/index.md)","id":"CVE-2026-34544","markdown":"https://insights.sbomify.com/CVE-2026-34544/index.md","name":"CVE-2026-34544","record":{"aliases":["BELL-CVE-2026-34544","CLSA-2026-1781180341","CLSA-2026-1781184685","DEBIAN-CVE-2026-34544","GHSA-h762-rhv3-h25v","JLSEC-2026-146","PYSEC-2026-2847","ROOT-OS-DEBIAN-11-CVE-2026-34544","ROOT-OS-DEBIAN-12-CVE-2026-34544","ROOT-OS-DEBIAN-13-CVE-2026-34544","UBUNTU-CVE-2026-34544"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"OpenEXR image library","requires_auth":"none","summary":"A crafted EXR file triggers an integer overflow leading to out-of-bounds writes, potentially causing crashes or code execution in applications using the library.","user_interaction":"required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"openexr","vendor":"openexr"}],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.","ecosystems":["PyPI"],"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: integer overflow to OOB write in uncompress_b44_impl()","id":"CVE-2026-34544","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"openexr:openexr","products":["openexr:openexr"],"type":"integer_overflow","year":"2026"},"n_packages":7,"n_references":3,"next":{"headline":"OpenEXR: integer overflow lead to OOB in HTJ2K decoder","id":"CVE-2026-34545"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["3.2.0"],"last_affected":["3.2.6"],"package":"openexr","purl":null,"source":"GHSA-h762-rhv3-h25v"},{"ecosystem":"PyPI","fixed":[],"introduced":["3.2.0"],"last_affected":["3.2.6"],"package":"openexr","purl":"pkg:pypi/openexr","source":"GHSA-h762-rhv3-h25v"},{"ecosystem":"PyPI","fixed":["3.4.8"],"introduced":["3.2.0"],"last_affected":[],"package":"openexr","purl":"pkg:pypi/openexr","source":"PYSEC-2026-2847"},{"ecosystem":"PyPI","fixed":[],"introduced":["3.3.0"],"last_affected":["3.3.8"],"package":"openexr","purl":null,"source":"GHSA-h762-rhv3-h25v"},{"ecosystem":"PyPI","fixed":[],"introduced":["3.3.0"],"last_affected":["3.3.8"],"package":"openexr","purl":"pkg:pypi/openexr","source":"GHSA-h762-rhv3-h25v"},{"ecosystem":"PyPI","fixed":["3.4.8"],"introduced":["3.4.0"],"last_affected":[],"package":"openexr","purl":null,"source":"GHSA-h762-rhv3-h25v"},{"ecosystem":"PyPI","fixed":["3.4.8"],"introduced":["3.4.0"],"last_affected":[],"package":"openexr","purl":"pkg:pypi/openexr","source":"GHSA-h762-rhv3-h25v"}],"prev":{"headline":"OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)","id":"CVE-2026-34543"},"products":["openexr"],"published":"2026-04-01","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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"total"},"state":"PUBLISHED","updated":"2026-04-02","vendors":["AcademySoftwareFoundation"]},"summary":"A crafted EXR file triggers an integer overflow leading to out-of-bounds writes, potentially causing crashes or code execution in applications using the library.","url":"https://insights.sbomify.com/CVE-2026-34544/"}