{"id":"CVE-2026-19082","summary":"Imager versions from 0.45_02 before 1.034 for Perl may expose adjacent heap bytes via strlen() over-read from zero-count ASCII EXIF entries in copy_string_tags","details":"Imager versions from 0.45_02 before 1.034 for Perl may expose adjacent heap bytes via strlen() over-read from zero-count ASCII EXIF entries in copy_string_tags.\n\ncopy_string_tags() computes an ASCII EXIF tag's length as `entry-\u003esize - 1` to strip the trailing NUL. A zero-count ASCII entry sets `entry-\u003esize` to 0, and the derived length reaches i_tags_add() as -1, which is interpreted as a request to call strlen(), scanning past the entry to the next NUL and copying those bytes into the tag. JPEG reaches this path via im_decode_exif(), as does the separate Imager::File::WEBP distribution, which is fixed by upgrading Imager.\n\nAny caller of Imager-\u003eread() on an attacker-supplied image with such an entry may receive an exif_* tag holding adjacent heap bytes instead of an empty string.","aliases":["GHSA-hx46-55wp-hv6m"],"modified":"2026-08-09T08:32:48.028324Z","published":"2026-08-07T17:56:49.592Z","database_specific":{"cna_assigner":"CPANSec","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19082.json","unresolved_ranges":[{"extracted_events":[{"introduced":"0.45_02"},{"fixed":"1.034"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"0.45_02"},{"fixed":"1.034"}],"source":"DESCRIPTION"}]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/08/07/6"},{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19082.json"},{"type":"ADVISORY","url":"https://github.com/tonycoz/imager/security/advisories/GHSA-hx46-55wp-hv6m"},{"type":"ADVISORY","url":"https://metacpan.org/release/TONYC/Imager-1.034/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19082"},{"type":"FIX","url":"https://github.com/tonycoz/imager/commit/24bde0427a113264d53f45a9c29ae756d84c82fe.patch"},{"type":"PACKAGE","url":"https://github.com/tonycoz/imager"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tonycoz/imager","events":[{"introduced":"0"},{"fixed":"24bde0427a113264d53f45a9c29ae756d84c82fe"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.033","v1.032","v1.031","v1.030","v1.029","v1.028","v1.027","v1.026","v1.025","v1.024","v1.023","v1.022","v1.021","v1.020","v1.019","v1.018","v1.017","v1.016","v1.015","v1.014","v1.013","v1.012","v1.011","v1.010","v1.009","v1.008","v1.007","v1.006","v1.005","v1.004_004","v1.004_003","v1.004_002","v1.004_001","v1.004","v1.003","v1.002","v1.001","v1.000","v0.99_02","v0.99_01","v0.99","v0.98","v0.97","v0.96_02","v0.96_01","v0.96","v0.95","v0.94_02","v0.94_01","v0.94","v0.93","v0.92","v0.91","v0.90","v0.89","v0.88","v0.87","v0.86","v0.85_02","v0.85_01","v0.85","v0.84_02","v0.84_01","v0.84","v0.83","v0.82_01","Imager-0.82","Imager-0.81","Imager-0.80","Imager-0.79","Imager-0.78","Imager-0.77","Imager-0.76","Imager-0.75","Imager-0.72","Imager-0.71","Imager-0.65","Imager-0.63","Imager-0.61","Imager-0.60","Imager-0.59","Imager-0.58","Imager-0.55","Imager-0.53","Imager-0.52","Imager-0.51_02","Imager-0.51_01","Imager-0.49","Imager-0_38pre9","Imager-0_38"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-19082.json","vanir_signatures_modified":"2026-08-09T08:32:48Z","vanir_signatures":[{"target":{"file":"imexif.c","function":"copy_string_tags"},"deprecated":false,"digest":{"function_hash":"231297465535854294784307961733920414899","length":505},"id":"CVE-2026-19082-2518b429","signature_type":"Function","signature_version":"v1","source":"https://github.com/tonycoz/imager/commit/24bde0427a113264d53f45a9c29ae756d84c82fe"},{"signature_type":"Line","signature_version":"v1","source":"https://github.com/tonycoz/imager/commit/24bde0427a113264d53f45a9c29ae756d84c82fe","target":{"file":"imexif.c"},"deprecated":false,"digest":{"line_hashes":["95496984272391345879915331518254570477","119694341546142109279469623595857194014","113343690363669954697588071783530676606","281711459284377410548569447780103755260"],"threshold":0.9},"id":"CVE-2026-19082-35983d18"}]}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}