Bug 2567944 (CVE-2026-123017)

Summary: CVE-2026-123017 godotsteam: GodotSteam: Server impersonation via unverified peer identifier
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in GodotSteam. The multiplayer networking component fails to validate peer identification numbers provided during initial connection handshakes, allowing a connected player to claim the designated server identity. A remote attacker participating in a multiplayer session can exploit this vulnerability to impersonate the game server, enabling the execution of unauthorized server commands or the interception of game communications from other participants.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-05 22:38:22 UTC
GodotSteam 4.17 through 4.23.2 trusts the peer value of 1 to mean that a player is the server. A grant_gold(1000000) call can be forged.