{"cve":"CVE-2026-34543","nvd":{"published":"2026-04-01T21:17:01.320","modified":"2026-10-26T21:10:00.170","status":"Analyzed","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, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-908"],"references":["https://github.com/AcademySoftwareFoundation/openexr/commit/5f6d0aaa9e43802917af7db90f181e88e083d3b8","https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8","https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vc68-257w-m432","https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vc68-257w-m432"],"products":["openexr:openexr"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-34543","score":0.00482,"percentile":0.41291,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-vc68-257w-m432","url":"https://osv.dev/vulnerability/GHSA-vc68-257w-m432","summary":"OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)","modified":"2026-09-10T03:51:03.423088566Z","packages":[{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.4.0 <3.4.8"],"fixed":["3.4.8"]},{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.3.0 <=3.3.8"],"fixed":[]},{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.2.0 <=3.2.6"],"fixed":[]}]},{"id":"PYSEC-2026-2850","url":"https://osv.dev/vulnerability/PYSEC-2026-2850","summary":"OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)","modified":"2026-07-13T16:32:33.854561150Z","packages":[{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.2.0 <3.4.8"],"fixed":["3.4.8"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}