# CVE-2026-86307: light0011 CMS cross-site request forgery

Source: https://junglewise.ai/threats/cve-2026-86307-light0011-cms-cross-site-request-forgery  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-07. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-86307 · Severity: medium · CVSS 4.3 · Published 2026-09-07

light0011 CMS is a content management system used for news publishing and user interaction features. A cross-site request forgery (CSRF) vulnerability in administrative endpoints allows an attacker to trick logged-in administrators into performing destructive actions such as deleting users, navigation items, and polls, or changing comment and poll settings without their knowledge or consent.

## Quick answers

**Is CVE-2026-86307 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86307 being exploited in the wild.

**How severe is CVE-2026-86307?** Medium severity, with a CVSS score of 4.3, published 7 September 2026.

**Which products and versions are affected?** light0011 CMS commit f72cf46f601efb2a0618c3814cc2f61380b38930 and earlier; rolling release.

**Is there a fix for CVE-2026-86307?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-86307 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-86307?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a cross-site request forgery (CSRF) flaw affecting multiple administrative state-changing endpoints in the application. The root cause is the lack of anti-CSRF token validation and insufficient HTTP method restrictions; several destructive actions are exposed as GET requests (e.g., Manager/delete, Nav/delete, Vote/delete, Vote/first), and POST endpoints similarly accept requests without CSRF protection. An attacker can exploit this by hosting malicious HTML on a different origin that, when loaded by an authenticated administrator, triggers state-changing requests using the victim's session cookie. The attack requires the target user to be logged in with administrative privileges but does not require additional user interaction beyond visiting a malicious page. There is no indication of an available patch; the project maintainer was notified through a GitHub issue but has not responded.

## Affected products

- light0011 CMS commit f72cf46f601efb2a0618c3814cc2f61380b38930 and earlier; rolling release

## Timeline

- 2026-07-18: disclosed: GitHub issue #12 opened by ThanatosXingYu
- 2026-09-07: advisory: CVE-2026-86307 published

## References

- [https://github.com/light0011/cms/](https://github.com/light0011/cms/)
- [https://github.com/light0011/cms/issues/12](https://github.com/light0011/cms/issues/12)