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Insufficient OIDC endpoint validation could invoke unintended local protocol handlers

🗓️ 12 Aug 2026 20:17:55Reported by MongoDBType 
mongodb
 mongodb
🔗 www.mongodb.com👁 11 Views

MongoDB OIDC auth skips URI scheme validation, enabling protocol handler abuse and potential code execution.

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Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-19503
12 Aug 202620:17
–attackerkb
cve
CVE
CVE-2026-19503
12 Aug 202620:17
–cve
cvelist
Cvelist
CVE-2026-19503 Insufficient OIDC endpoint validation could invoke unintended local protocol handlers
12 Aug 202620:17
–cvelist
euvd
EUVD
EUVD-2026-57551
12 Aug 202620:17
–euvd
nvd
NVD
CVE-2026-19503
12 Aug 202621:17
–nvd
osv
OSV
UBUNTU-CVE-2026-19503
12 Aug 202621:17
–osv
ptsecurity
Positive Technologies
PT-2026-71305
12 Aug 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-19503: Improper Input Validation
12 Aug 202600:00
–rapid7
ubuntucve
UbuntuCve
CVE-2026-19503
12 Aug 202621:17
–ubuntucve
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-19503
14 Sep 202600:00
–nessus
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Vulners
Node
OR
mongodbschema_builder_cliRange1.0.1–1.2.1

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13 Aug 2026 12:48Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.14.8 - 6.5
CVSS 46.3
EPSS0.00203
SSVC
11