Bug 2336629 (CVE-2025-20033)

Summary: CVE-2025-20033 mattermost: DoS via custom post type for sysconsole plugin readers
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: alcohan, amctagga, anjoseph, aoconnor, bniver, caswilli, flucifre, gmeno, gparvin, jprabhak, kaycoth, mbenjamin, mhackett, njean, owatkins, pahickey, rhaigner, sostapov, vereddy, wtam
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A security issue was discovered in Mattermost. In certain versions, Mattermost fails to properly validate post types, which allows attackers to deny service to users with the sysconsole_read_plugins permission via creating a post with the custom_pl_notification type and specific props.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-01-09 17:44:52 UTC
Mattermost versions 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate post types, which allows attackers to deny service to users with the sysconsole_read_plugins permission via creating a post with the custom_pl_notification type and specific props.