Quick answers
- Is CVE-2026-87099 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-87099 being exploited in the wild.
- How severe is CVE-2026-87099?
- Medium severity, with a CVSS score of 5.7, published 28 October 2026.
- Which products and versions are affected?
- Acronis Cyber Protect 17 before build 42587.
- Is there a fix for CVE-2026-87099?
- Yes: fixed in Acronis Cyber Protect 17 build 42587. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-87099 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-87099?
- Check whether you run Acronis Cyber Protect 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: Acronis Cyber Protect 17 build 42587
Technical details
A cross-site scripting vulnerability exists in Acronis Cyber Protect due to insufficient input validation in a web-facing component. An attacker can supply malicious script payloads through user-controllable inputs; when processed and reflected to other users or stored, the scripts execute in the browser context with the privileges of the affected user. The vulnerability affects versions prior to build 42587.
Affected products
- Acronis Cyber Protect 17 before build 42587
Timeline
- 2026-10-28: disclosed