CVE-2026-50576
ePA 3.x Integration: HTTP Header Injection in VAU Inner Requests
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration does not neutralize CRLF characters in values used by app/vau/VAUProtokoll.py to construct VAU inner HTTP requests. The build_inner_header function interpolates the uri, host, accept_type, content_type, content_length, USER_AGENT, and insurant_id values into request lines and headers, including x-useragent and x-insurantid. An authenticated attacker who controls a value can inject additional headers into the inner request. Depending on ePA server handling, an injected x-insurantid header can expose another patient's records, and injected Authorization headers can bypass the intended authentication or authorization context. Session-derived USER_AGENT input can also poison requests across the session. This issue is fixed in version 1.3.0.
Timeline
ID reserved
By GitHub_M
- 3 months later
· 3 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Deferred | 3.1 | Medium6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.49% · top 57% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
fbeta-GmbH · ePA3-Service-OpenSource
- affected < 1.3.0
References (5)
- https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/security/advisories/GHSA-j8jg-7fqf-4xx9 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/pull/11 (opens in a new tab)x_refsource_MISC
- https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/commit/b984d15d261423302de337adae25e84c54e9c2d1 (opens in a new tab)x_refsource_MISC
- https://github.com/fbeta-GmbH/ePA3-Service-OpenSource/releases/tag/1.3.0 (opens in a new tab)x_refsource_MISC
- https://www.machinespirits.de/advisory/013a60 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-50576)Record last updated .