Bug 2538348 (CVE-2026-94056)

Summary: CVE-2026-94056 Exim: Exim: Information disclosure via attacker-controlled proxy when using Proxy-Protocol
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Exim. When the Proxy-Protocol is used with an attacker-controlled proxy, an attacker can read certain uninitialized data from stack memory. This information disclosure could potentially expose sensitive data.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2539251, 2539252    
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Description OSIDB Bzimport 2026-09-22 18:13:16 UTC
Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.