CVE-2026-93587

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{"bugzilla": {"description": "ImageMagick: ImageMagick: Local user can cause denial of service via policy bypass in image decoders", "id": "2538695", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2538695"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-770", "details": ["ImageMagick before 7.1.2-31 and before 6.9.13-56 contains a policy bypass in the PCD (and, per the upstream advisory, CUBE and HALD) coder: when a specific command line option is supplied, the decoder does not check a configured resource limit, which can result in extra memory allocation. A local user able to pass command line options to ImageMagick can therefore exceed the intended memory policy limit, causing a limited availability impact. The issue is fixed in 7.1.2-31 and 6.9.13-56.", "A flaw was found in ImageMagick. A local user, by supplying a specific command line option to the PCD, CUBE, or HALD image decoders, can bypass configured resource limits. This policy bypass allows for extra memory allocation, enabling the user to exceed the intended memory policy limit. The most significant consequence is a denial of service (DoS) due to uncontrolled resource consumption."], "mitigation": {"lang": "en:us", "value": "To mitigate the potential for denial of service, system administrators can enforce resource limits for users who execute ImageMagick. This can be achieved by setting appropriate `ulimit` values for memory consumption (e.g., `as` for virtual memory or `rss` for resident set size) in user login scripts or system-wide configuration files like `/etc/security/limits.conf`. For example, to limit virtual memory for a user, add a line such as `username hard as 1048576` (1GB) to `/etc/security/limits.conf`. Changes to `/etc/security/limits.conf` require users to log out and back in to take effect and may impact other applications run by the user."}, "name": "CVE-2026-93587", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "ImageMagick", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "ImageMagick", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2026-09-18T13:20:01Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93587\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93587\nhttps://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-89wq-f8f6-2j2v\nhttps://www.vulncheck.com/advisories/imagemagick-before-7.1.2-31-policy-bypass-via-pcd-decoder"], "threat_severity": "Low"}

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