Medium [CVE-2026-55628] Unauthorized file access due to missing policy checks in concatenate operation
This medium-severity Red Hat Linux advisory covers CVE-2026-55628 affecting Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat package: imagemagick.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
In versions prior to 7.1.2-26he, the `-concatenate` operation is missing policy checks, potentially resulting in both reading and writing to paths disallowed by the security policy. This issue has been fixed in version 7.1.2-26.
A flaw was found in ImageMagick. The `-concatenate` operation, used for combining images, lacks proper security policy checks.
This oversight could allow an attacker to read from or write to file paths that should otherwise be restricted by the security policy. This could lead to unauthorized access to sensitive system resources.
Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N). Weakness: CWE-1220.
Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: imagemagick.
Is CVE-2026-55628 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-55628 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-55628?
Upgrade to a fixed release named by Red Hat:
- 7.1.2-26
Confirm against the vendor advisory before you patch.
- < 7.1.2-26he
- 7.1.2
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
- 7.1.2-26
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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