CVE-2026-48021

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/med-united/epa4all/releases/tag/2026-05-20
https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh
https://www.machinespirits.com/advisory/aa49f0

Configurations

No configuration.

History

24 Jul 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-24 19:16

Updated : 2026-07-30 19:19

NVD link : CVE-2026-48021

Mitre link : CVE-2026-48021

CVE.ORG link : CVE-2026-48021

JSON object : View

Products Affected

No product.

CWE

CWE-295

Improper Certificate Validation

CWE-347

Improper Verification of Cryptographic Signature

{"id": "CVE-2026-48021", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48021", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-25T00:56:57.881404Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "med-united", "product": "epa4all", "versions": [{"status": "affected", "version": "< 2026-05-20"}]}]}], "published": "2026-07-24T19:16:58.033", "references": [{"url": "https://github.com/med-united/epa4all/releases/tag/2026-05-20", "source": "security-advisories@github.com"}, {"url": "https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh", "source": "security-advisories@github.com"}, {"url": "https://www.machinespirits.com/advisory/aa49f0", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-295"}, {"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-07-30T19:19:45.637", "sourceIdentifier": "security-advisories@github.com"}