{"id":"CVE-2026-31235","aliases":["GHSA-g82g-j283-hj97","PYSEC-2026-356"],"title":"imgaug contains an insecure deserialization vulnerability in BackgroundAugmenter class within multicore.py module","summary":"imgaug contains an insecure deserialization vulnerability in BackgroundAugmenter class within multicore.py module","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"imgaug","product":"imgaug","ecosystem":"pip","affected":["imgaug <= 0.4.0"],"published":"2026-05-12","updated":"2026-10-27","sourceUpdated":"2026-10-27T17:27:43.511108038Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-g82g-j283-hj97","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31235"},{"url":"https://github.com/aleju/imgaug"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/imgaug/PYSEC-2026-356.yaml"},{"url":"https://pypi.org/project/imgaug"},{"url":"https://www.notion.so/CVE-2026-31235-35d1e139318881efb701d814228424a9"},{"url":"https://github.com/advisories/GHSA-g82g-j283-hj97"}],"tags":["osv","pip","ghsa"],"epss":0.00473,"epssPercentile":0.40695,"cwe":["CWE-502"],"ingestedAt":"2026-10-27T17:33:23.771Z","slug":"CVE-2026-31235","body":"## Overview\n\nThe imgaug library thru 0.4.0 contains an insecure deserialization vulnerability in its BackgroundAugmenter class within the multicore.py module. The class uses Python's pickle module to deserialize data received via a multiprocessing queue in the _augment_images_worker() method without any safety checks. An attacker who can influence the data placed into this queue (e.g., through social engineering, malicious input scripts, or a compromised shared queue) can provide a malicious pickle payload. When deserialized, this payload can execute arbitrary code in the context of the worker process, leading to remote or local code execution depending on the deployment scenario.\n\n## Affected packages\n\n- `imgaug <= 0.4.0`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}