{"answers":{"affected":"7 open source packages ship an affected version, including openexr and OpenEXR. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-34588 in the wild and no public exploit code.","fix":"Upgrade openexr to a fixed version for your release line: 3.2.7, 3.3.9 or 3.4.9.","what":"CVE-2026-34588 is a high-severity vulnerability in Openexr Openexr, published on 6 Apr 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-2026-34588 and fix it if it is affected.\n\nWhat it is: CVE-2026-34588 is a high-severity vulnerability in Openexr Openexr, published on 6 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-34588 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- openexr (PyPI): affected from 3.1.0; fixed in 3.2.7, 3.3.9, 3.4.9\n- openexr (PyPI): affected from 3.1.0; fixed in 3.2.7\n- openexr (PyPI): affected from 3.3.0; fixed in 3.3.9\n- openexr (PyPI): affected from 3.4.0; fixed in 3.4.9\n- OpenEXR (PyPI): affected from 3.1.0; fixed in 3.2.7\n- OpenEXR (PyPI): affected from 3.3.0; fixed in 3.3.9\n- OpenEXR (PyPI): affected from 3.4.0; fixed in 3.4.9\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-2026-34588/ (Markdown: https://insights.sbomify.com/CVE-2026-34588/index.md)","id":"CVE-2026-34588","markdown":"https://insights.sbomify.com/CVE-2026-34588/index.md","name":"CVE-2026-34588","record":{"aliases":["ALSA-2026:15887","ALSA-2026:15888","ALSA-2026:19146","ALSA-2026:19359","BELL-CVE-2026-34588","CLSA-2026-1776950014","CLSA-2026-1776950756","DEBIAN-CVE-2026-34588","ECHO-1364-3d73-650f","GHSA-588r-cr5c-w6hf","JLSEC-2026-148","PYSEC-2026-2845","RHSA-2026:15887","RHSA-2026:15888","RHSA-2026:17656","RHSA-2026:17658","RHSA-2026:17659","RHSA-2026:17660","RHSA-2026:19146","RHSA-2026:19359","RHSA-2026:19587","RLSA-2026:15887","RLSA-2026:15888","RLSA-2026:19146","RLSA-2026:19359","ROOT-OS-DEBIAN-11-CVE-2026-34588","ROOT-OS-DEBIAN-12-CVE-2026-34588","ROOT-OS-DEBIAN-13-CVE-2026-34588","UBUNTU-CVE-2026-34588"],"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 signed integer overflow in the PIZ decoder allows attackers to trigger out-of-bounds reads and writes via crafted EXR files, potentially leading to code execution.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"openexr","vendor":"openexr"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/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"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.1.0 to before 3.2.7, 3.3.9, and 3.4.9, internal_exr_undo_piz() advances the working wavelet pointer with signed 32-bit arithmetic. Because nx, ny, and wcount are int, a crafted EXR file can make this product overflow and wrap. The next channel then decodes from an incorrect address. The wavelet decode path operates in place, so this yields both out-of-bounds reads and out-of-bounds writes. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.","ecosystems":["AlmaLinux:10","AlmaLinux:9","PyPI","Red Hat:enterprise_linux:10.1","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::crb","Red Hat:enterprise_linux_eus:10.0","Red Hat:rhel_e4s:9.0::appstream","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_eus:9.4::appstream","Red Hat:rhel_eus:9.4::crb","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus:9.6::crb","Rocky Linux:10","Rocky Linux:9"],"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":"OpenEXR has a signed 32-bit Overflow in PIZ Decoder Leads to OOB Read/Write","id":"CVE-2026-34588","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"openexr:openexr","products":["openexr:openexr"],"type":"integer_overflow","year":"2026"},"n_packages":87,"n_references":4,"next":{"headline":"OpenEXR: DWA Lossy Decoder Heap Out-of-Bounds Write","id":"CVE-2026-34589"},"packages":[{"ecosystem":"PyPI","fixed":["3.2.7"],"introduced":["3.1.0"],"last_affected":[],"package":"OpenEXR","purl":null,"source":"GHSA-588r-cr5c-w6hf"},{"ecosystem":"PyPI","fixed":["3.3.9"],"introduced":["3.3.0"],"last_affected":[],"package":"OpenEXR","purl":null,"source":"GHSA-588r-cr5c-w6hf"},{"ecosystem":"PyPI","fixed":["3.4.9"],"introduced":["3.4.0"],"last_affected":[],"package":"OpenEXR","purl":null,"source":"GHSA-588r-cr5c-w6hf"},{"ecosystem":"PyPI","fixed":["3.2.7","3.3.9","3.4.9"],"introduced":["3.1.0","3.3.0","3.4.0"],"last_affected":[],"package":"openexr","purl":"pkg:pypi/openexr","source":"PYSEC-2026-2845"},{"ecosystem":"PyPI","fixed":["3.2.7"],"introduced":["3.1.0"],"last_affected":[],"package":"openexr","purl":"pkg:pypi/openexr","source":"GHSA-588r-cr5c-w6hf"},{"ecosystem":"PyPI","fixed":["3.3.9"],"introduced":["3.3.0"],"last_affected":[],"package":"openexr","purl":"pkg:pypi/openexr","source":"GHSA-588r-cr5c-w6hf"},{"ecosystem":"PyPI","fixed":["3.4.9"],"introduced":["3.4.0"],"last_affected":[],"package":"openexr","purl":"pkg:pypi/openexr","source":"GHSA-588r-cr5c-w6hf"},{"ecosystem":"AlmaLinux:10","fixed":["3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/almalinux/openexr","source":"ALSA-2026:15888"},{"ecosystem":"AlmaLinux:10","fixed":["3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/almalinux/openexr","source":"ALSA-2026:19146"},{"ecosystem":"AlmaLinux:10","fixed":["3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-devel","purl":"pkg:rpm/almalinux/openexr-devel","source":"ALSA-2026:15888"},{"ecosystem":"AlmaLinux:10","fixed":["3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-devel","purl":"pkg:rpm/almalinux/openexr-devel","source":"ALSA-2026:19146"},{"ecosystem":"AlmaLinux:10","fixed":["3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/almalinux/openexr-libs","source":"ALSA-2026:15888"},{"ecosystem":"AlmaLinux:10","fixed":["3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/almalinux/openexr-libs","source":"ALSA-2026:19146"},{"ecosystem":"AlmaLinux:9","fixed":["3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/almalinux/openexr","source":"ALSA-2026:15887"},{"ecosystem":"AlmaLinux:9","fixed":["3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/almalinux/openexr","source":"ALSA-2026:19359"},{"ecosystem":"AlmaLinux:9","fixed":["3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr-devel","purl":"pkg:rpm/almalinux/openexr-devel","source":"ALSA-2026:15887"},{"ecosystem":"AlmaLinux:9","fixed":["3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr-devel","purl":"pkg:rpm/almalinux/openexr-devel","source":"ALSA-2026:19359"},{"ecosystem":"AlmaLinux:9","fixed":["3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/almalinux/openexr-libs","source":"ALSA-2026:15887"},{"ecosystem":"AlmaLinux:9","fixed":["3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/almalinux/openexr-libs","source":"ALSA-2026:19359"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/redhat/openexr","source":"RHSA-2026:15888"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debuginfo","purl":"pkg:rpm/redhat/openexr-debuginfo","source":"RHSA-2026:15888"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debugsource","purl":"pkg:rpm/redhat/openexr-debugsource","source":"RHSA-2026:15888"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-devel","purl":"pkg:rpm/redhat/openexr-devel","source":"RHSA-2026:15888"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/redhat/openexr-libs","source":"RHSA-2026:15888"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.1.10-8.el10_1.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs-debuginfo","purl":"pkg:rpm/redhat/openexr-libs-debuginfo","source":"RHSA-2026:15888"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/redhat/openexr","source":"RHSA-2026:19146"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debuginfo","purl":"pkg:rpm/redhat/openexr-debuginfo","source":"RHSA-2026:19146"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debugsource","purl":"pkg:rpm/redhat/openexr-debugsource","source":"RHSA-2026:19146"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-devel","purl":"pkg:rpm/redhat/openexr-devel","source":"RHSA-2026:19146"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/redhat/openexr-libs","source":"RHSA-2026:19146"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:3.1.10-8.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs-debuginfo","purl":"pkg:rpm/redhat/openexr-libs-debuginfo","source":"RHSA-2026:19146"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/redhat/openexr","source":"RHSA-2026:15887"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr","purl":"pkg:rpm/redhat/openexr","source":"RHSA-2026:19359"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debuginfo","purl":"pkg:rpm/redhat/openexr-debuginfo","source":"RHSA-2026:15887"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debuginfo","purl":"pkg:rpm/redhat/openexr-debuginfo","source":"RHSA-2026:19359"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debugsource","purl":"pkg:rpm/redhat/openexr-debugsource","source":"RHSA-2026:15887"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr-debugsource","purl":"pkg:rpm/redhat/openexr-debugsource","source":"RHSA-2026:19359"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/redhat/openexr-libs","source":"RHSA-2026:15887"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs","purl":"pkg:rpm/redhat/openexr-libs","source":"RHSA-2026:19359"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:3.1.1-3.el9_7.2"],"introduced":["0"],"last_affected":[],"package":"openexr-libs-debuginfo","purl":"pkg:rpm/redhat/openexr-libs-debuginfo","source":"RHSA-2026:15887"}],"prev":{"headline":"Kirby has Server-Side Template Injection (SSTI) via double template resolution in option rendering","id":"CVE-2026-34587"},"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":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"total"},"state":"PUBLISHED","updated":"2026-09-09","vendors":["AcademySoftwareFoundation"]},"summary":"A signed integer overflow in the PIZ decoder allows attackers to trigger out-of-bounds reads and writes via crafted EXR files, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-34588/"}