What is CVE-2026-109186?

CVE-2026-109186 is a high-severity vulnerability in Jishenghua Jsherp, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 8.8/10. Published 2026-10-12.

How severe is CVE-2026-109186?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Jishenghua Jsherp

CVE-2026-109186

jshERP through 3.6 contains a mass assignment vulnerability in the UserController update handler that allows authenticated users to overwrite protected fields including tenant_id and password. Attackers can send a crafted PUT /user/update body to switch into another tenant on next login or overwrite other users' password hashes for account takeover.

Vulnerability class: Mass Assignment

Published 2026-10-12 · last modified 2026-10-12.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Jishenghua Jsherp

Weakness classification (CWE)

CWE-915 — Improperly Controlled Modification of Dynamically-Determined Object Attributes

References

github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b… (exploit)
github.com/jishenghua/jshERP/blob/8f28e7c2fe54d54de3621a414f5df1833dc5a55f/jshE… (technical-description)
github.com/jishenghua/jshERP/blob/8f28e7c2fe54d54de3621a414f5df1833dc5a55f/jshE… (technical-description)
www.vulncheck.com/advisories/jsherp-through-3.6-mass-assignment-via-put-user-up… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109186?: CVE-2026-109186 is a high-severity vulnerability in Jishenghua Jsherp, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 8.8/10. Published 2026-10-12.
How severe is CVE-2026-109186?: High severity. CVSS v3 base score is 8.8 out of 10.