HOMEVULNERABILITIESCVE-2026-31798
MEDIUM

CVE-2026-31798

CWE-295Published: March 13, 2026· Updated: Mar 18, 2026

5.0
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-31798 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Affected Vendors & Products

fit2cloud1 product
jumpserver
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7

All References (1)

→
https://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7Vendor Advisory

Quick Facts

CVE IDCVE-2026-31798
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-295
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 13, 2026

Related CVEs (CWE-295)

CVE-2026-4370
10.0
CVE-2026-9258
9.8
CVE-2026-9259
9.8
CVE-2026-20184
9.8
CVE-2025-15573
9.4
CVE-2026-5194
9.3

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31798 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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