Quick answers
- Is CVE-2026-65448 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-65448 being exploited in the wild.
- How severe is CVE-2026-65448?
- Medium severity, with a CVSS score of 6.5, published 27 July 2026.
- Which products and versions are affected?
- AcyMailing Newsletter Team Anti Spam and list cleaner – AcyChecker <= 1.8.1.
- Is there a fix for CVE-2026-65448?
- A patch was published on 2026-07-27: Version 2.0.0 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-65448 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-65448?
- Check whether you run AcyMailing Newsletter Team Anti Spam and list cleaner – AcyChecker 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
AcyChecker (Anti Spam and list cleaner) versions 1.8.1 and below are vulnerable to Unauthenticated Reflected Cross-Site Scripting (XSS). The vulnerability exists due to improper neutralization of user-supplied input during web page generation (CWE-79). An unauthenticated attacker can exploit this by tricking a user into performing an action, such as clicking a malicious link, which executes arbitrary JavaScript in the context of the victim's browser. This can lead to session hijacking or unauthorized actions performed on behalf of the user. The issue is resolved in version 2.0.0.
Affected products
- AcyMailing Newsletter Team Anti Spam and list cleaner – AcyChecker <= 1.8.1
Timeline
- 2026-07-17: disclosed: Reported by Trương Hữu Phúc
- 2026-07-27: advisory: Published by Patchstack and NVD
- 2026-07-27: patched: Version 2.0.0 released to address the vulnerability