CVE-2026-31798
mediumpriority · track · 0EPSS 0.001 · 1 %ileEUUSEPSS · scored 2026-10-27
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.10.16-lts, JumpServer improperly validates certificates in the Custom SMS API Client. When JumpServer sends MFA/OTP codes via Custom SMS API, an attacker can intercept the request and capture the verification code BEFORE it reaches the user's phone. This vulnerability is fixed in v4.10.16-lts.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7cnnvd
- https://www.jumpserver.org/Patchcnnvd
- https://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7enisa_euvd
- https://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7Vendor Advisorynvd
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