Quick answers
- Is CVE-2026-18957 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18957 being exploited in the wild.
- How severe is CVE-2026-18957?
- Medium severity, with a CVSS score of 5.4, published 4 September 2026.
- Which products and versions are affected?
- Menulux Software Inc. Menulux Portal before 20260903211448.
- Is there a fix for CVE-2026-18957?
- A patch was published on 2026-09-03: Version 20260903211448 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-18957 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-18957?
- Check whether you run Menulux Software Inc. Menulux Portal at an affected version. 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
This is a stored cross-site scripting (XSS) vulnerability arising from improper neutralization of user-supplied input during web page generation. The vulnerability exists in Menulux Portal before version 20260903211448. Attackers can inject malicious JavaScript through user-controlled input fields that are stored in the application and later rendered to other users without proper sanitization or encoding. No special authentication or network preconditions have been disclosed. A successful exploit allows arbitrary JavaScript execution in the context of affected users' browsers, enabling session hijacking, credential theft, or malware distribution. A patched version addressing this issue has been released.
Affected products
- Menulux Software Inc. Menulux Portal before 20260903211448
Timeline
- 2026-09-04: disclosed
- 2026-09-03: patched: Version 20260903211448 and later