Vulnerability · Published Oct 8, 2026 · Assigned by redhat

CVE-2026-107445Rubygem-katello: katello: katello: katello flatpak remote repositories api cross-organization authorization bypass

Medium 5.4

In plain English

A medium-severity authorization bypass via user-controlled key in Red Hat Hardened Images from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 93.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A flaw was found in Katello where the Flatpak Remote Repositories API does not properly enforce authorization when accessing a flatpak remote repository by identifier. An authenticated user with permission to view flatpak remotes in one organization may be able to access flatpak remote repository information belonging to another organization. The same unscoped lookup is used by the mirror action, which may allow creating a repository in a product the user can edit that is configured with another organization's flatpak remote URL and stored remote credentials.

Affected products (as reported)

Vendor	Product	Versions
Red Hat	Red Hat Hardened Images	see references
Red Hat	Red Hat Satellite 6	see references

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

https://access.redhat.com/security/cve/CVE-2026-107445 vdb-entry, x_refsource_REDHAT
RHBZ#2547766 issue-tracking, x_refsource_REDHAT