{"id":"CVE-2026-40192","summary":"Pillow is vulnerable to a FITS GZIP decompression bomb","details":"Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.","aliases":["BIT-pillow-2026-40192","GHSA-whj4-6x5x-4v2j","PYSEC-2026-2250"],"modified":"2026-09-12T03:30:45.084119884Z","published":"2026-04-15T22:53:56.147Z","related":["SUSE-SU-2026:21382-1","openSUSE-SU-2026:10575-1","openSUSE-SU-2026:20617-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400","CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40192.json"},"references":[{"type":"WEB","url":"https://pillow.readthedocs.io/en/stable/releasenotes/12.2.0.html#prevent-fits-decompression-bomb"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40192.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16008"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16009"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16030"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16174"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:17609"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:17611"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19375"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19712"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21017"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:22465"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:22629"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:22840"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23361"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24761"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24762"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24853"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24866"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24977"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27076"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34365"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34366"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34368"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:37275"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:57387"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:61627"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:61628"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:61629"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65126"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-40192"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40192.json"},{"type":"ADVISORY","url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-whj4-6x5x-4v2j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40192"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2458856"},{"type":"FIX","url":"https://github.com/python-pillow/Pillow/commit/3cb854e8b2bab43f40e342e665f9340d861aa628"},{"type":"FIX","url":"https://github.com/python-pillow/Pillow/pull/9521"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python-pillow/pillow","events":[{"introduced":"5c89d88eee199ba53f64581ea39b6a1bc52feb1a"},{"fixed":"3c41c095064200a02672d89cc5ff629eaf4b0d4f"},{"fixed":"3cb854e8b2bab43f40e342e665f9340d861aa628"}],"database_specific":{"cpe":"cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"10.3.0"},{"fixed":"12.2.0"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["12.1.0","12.0.0","11.3.0","11.2.1","11.1.0","11.0.0","10.4.0","10.3.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40192.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}