# CVE-2026-8196: JeecgBoot mLogin Endpoint LoginController.java authorization

> Remote attackers can bypass authorization in the JeecgBoot mLogin endpoint, potentially gaining unauthorized access to system functions.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 May 2026
- **Updated:** 11 May 2026
- **Also known as:** GHSA-vvv6-fxhr-fx5v

## What is CVE-2026-8196?

CVE-2026-8196 is a medium-severity authentication bypass vulnerability in JeecgBoot, published on 9 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw has been found in JeecgBoot 3.9.1. The impacted element is an unknown function of the file jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/LoginController.java of the component mLogin Endpoint. This manipulation causes authorization bypass. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is regarded as difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-8196?


## How do I fix CVE-2026-8196?

No fix has been published for CVE-2026-8196 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8196 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8196 exists.

Public exploit code:

- CVE-2026-8196 (github_poc): https://github.com/HORKimhab/CVE-2026-8196

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8196 and fix it if it is affected.

What it is: CVE-2026-8196 is a medium-severity authentication bypass vulnerability in JeecgBoot, published on 9 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8196 exists.

Affected product: JeecgBoot. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-8196/ (Markdown: https://insights.sbomify.com/CVE-2026-8196/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8196
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8196
- OSV: https://osv.dev/vulnerability/CVE-2026-8196

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-8196/
Summaries are generated and may contain mistakes; the official description above is the record.