Quick answers
- Is CVE-2026-105318 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105318 being exploited in the wild.
- How severe is CVE-2026-105318?
- High severity, with a CVSS score of 7.1, published 9 October 2026.
- Which products and versions are affected?
- Datasolution AcyMailing SMTP Newsletter through 11.1.0.
- Is there a fix for CVE-2026-105318?
- Yes: fixed in 11.1.1 and later. Until then: Update to version 11.1.1 or later immediately. If you cannot update right away, Patchstack offers a mitigation rule to block attacks against this vulnerability until patching is completed. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-105318 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-105318?
- Check whether you run Datasolution AcyMailing SMTP Newsletter 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.
How to fix
- Fixed in: 11.1.1 and later
Update to version 11.1.1 or later immediately. If you cannot update right away, Patchstack offers a mitigation rule to block attacks against this vulnerability until patching is completed.
Technical details
The plugin fails to properly neutralize user input during web page generation, allowing reflected XSS attacks. An unauthenticated attacker can craft a malicious link that, when clicked by a user, injects arbitrary JavaScript into the page. This requires user interaction but no authentication, making it a practical vector for widespread exploitation.
Affected products
- Datasolution AcyMailing SMTP Newsletter through 11.1.0
Timeline
- 2026-10-09: disclosed: Vulnerability published
- 2026-10-07: patched: Patched version 11.1.1 released
- 2026-09-30: other: Reported by Peter Tang