# CVE-2026-87101: Acronis Cyber Protect sensitive information disclosure in token validation

Source: https://junglewise.ai/threats/cve-2026-87101-sensitive-information-disclosure-due-to-improper-token-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-87101 · Severity: medium · CVSS 6.2 · Published 2026-10-28

Acronis Cyber Protect is a backup and recovery solution that protects business data across multiple platforms. A flaw in how the product validates authentication tokens could allow an attacker to access sensitive information that should be restricted. This could lead to unauthorized exposure of protected data or system credentials.

Technologies: [Acronis Cyber Protect](https://junglewise.ai/threats/technologies/cyber-protect). Vendors: [Acronis](https://junglewise.ai/threats/vendors/acronis).

## Quick answers

**Is CVE-2026-87101 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-87101 being exploited in the wild.

**How severe is CVE-2026-87101?** Medium severity, with a CVSS score of 6.2, published 28 October 2026.

**Which products and versions are affected?** Acronis Cyber Protect 17 before build 42587.

**Is there a fix for CVE-2026-87101?** Yes: fixed in Cyber Protect 17 build 42587 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-87101 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-87101?** 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 Cyber Protect 17 build 42587 and later

## Technical details

The vulnerability stems from improper token validation logic in Acronis Cyber Protect 17, allowing an attacker to bypass authentication checks and disclose sensitive information. The flaw affects both Linux and Windows versions prior to build 42587. Exploitation requires network access to the affected system but no user interaction.

## Affected products

- Acronis Cyber Protect 17 before build 42587

## Timeline

- 2026-10-28: disclosed

## References

- [https://security-advisory.acronis.com/advisories/SEC-9812](https://security-advisory.acronis.com/advisories/SEC-9812)

## Related threats

- [Acronis Cyber Protect SSL certificate verification bypass](https://junglewise.ai/threats/cve-2026-87880-sensitive-information-disclosure-due-to-missing-ssl-certificate)
- [Acronis Cyber Protect information disclosure in token validation](https://junglewise.ai/threats/cve-2026-87879-sensitive-information-disclosure-due-to-improper-token-validation)
- [Acronis Cyber Protect executable stack attribute enabled](https://junglewise.ai/threats/cve-2026-87878-linux-binaries-have-executable-stack-attribute-enabled-the)
- [Acronis Cyber Protect token validation bypass](https://junglewise.ai/threats/cve-2026-87103-sensitive-information-disclosure-and-manipulation-due-to-improper)
- [Acronis Cyber Protect token validation bypass](https://junglewise.ai/threats/cve-2026-87102-sensitive-information-disclosure-and-manipulation-due-to-improper)