PatchTheCVEorthanc-server vulnerabilities
Recent CVEs affecting orthanc-server products. 2 tracked.
orthanc-server has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-04-09. Highest priority: CVE-2026-5438 (score 42/100).
- CVE-2026-5438 HIGH 7.5 UPGRADE A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzi
- CVE-2026-5444 HIGH 7.1 UPGRADE A heap buffer overflow vulnerability exists in the PAM image parsing logic
FAQ
How do I fix orthanc-server vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is orthanc-server being exploited right now?
None of the tracked orthanc-server CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which orthanc-server CVE should I patch first?
CVE-2026-5438 currently ranks highest (42/100): A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzi.