Quick answers
- Is CVE-2026-94075 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-94075 being exploited in the wild.
- How severe is CVE-2026-94075?
- Critical severity, with a CVSS score of 9.8, published 24 October 2026.
- Which products and versions are affected?
- Tribulant Software Newsletters through 4.18.1.
- Is there a fix for CVE-2026-94075?
- Yes: fixed in 4.18.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-94075 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-94075?
- Check whether you run Tribulant Software Newsletters 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: 4.18.2 or later
Technical details
A PHP object injection vulnerability in Newsletters through 4.18.1 stems from unsafe deserialization of untrusted input, allowing attackers to instantiate arbitrary objects and trigger harmful actions. The vulnerability is unauthenticated, network-accessible, and can lead to remote code execution. The vulnerability is resolved in version 4.18.2.
Affected products
- Tribulant Software Newsletters through 4.18.1
Timeline
- 2026-10-24: disclosed
- 2026-10-22: patched: version 4.18.2 released
- 2026-10-22: advisory: Patchstack advisory published