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CVE-2026-48021
9.1 CRITICAL
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): None (N)
Activity log
- Created & dismissed (no matching packages found) suggestion
epa4all Security Incident: Implement keystore based on Telematik TSL, implement hostname check and certificate check for lib-vau
In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.
References
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https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh x_refsource_CONFIRM
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https://github.com/med-united/epa4all/releases/tag/2026-05-20 x_refsource_MISC
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https://www.machinespirits.com/advisory/aa49f0 x_refsource_MISC
Affected products
epa4all
- ==< 2026-05-20