# CVE-2026-95806: MISP remote code execution via unregistered phar stream wrapper

Source: https://junglewise.ai/threats/cve-2026-95806-misp-ships-with-php-s-phar-stream-wrapper-registered-in-both-its  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-95806 · Severity: info · Published 2026-09-22

MISP, a threat intelligence sharing platform, was configured to enable PHP's phar stream wrapper by default, which allows attackers who can control filesystem paths to trigger arbitrary code execution through deserialization or direct phar access. An attacker could exploit this to run malicious code with the privileges of the web server process, potentially compromising the entire threat intelligence platform and any data it contains.

Technologies: [MISP Project MISP](https://junglewise.ai/threats/technologies/misp-project-misp). Vendors: [MISP Project](https://junglewise.ai/threats/vendors/misp-project).

## Quick answers

**Is CVE-2026-95806 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-95806 being exploited in the wild.

**How severe is CVE-2026-95806?** Informational severity, published 22 September 2026.

**Which products and versions are affected?** MISP Project MISP.

**Is there a fix for CVE-2026-95806?** A patch was published on 2026-09-22: Fix committed to unregister phar stream wrapper in entry points Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-95806 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-95806?** Check whether you run MISP Project MISP. 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

The vulnerability exploits PHP's phar stream wrapper, which is registered by default in MISP's entry points. This wrapper causes any filesystem operation on an attacker-influenced path to trigger implicit unserialize() calls (deserialization sink) and allows direct execution of code within relocated phar archives. MISP itself contains no legitimate use of phar archives, making the wrapper purely an attack surface that was unintentionally available to any attacker who could inject or control filesystem path arguments.

## Affected products

- MISP Project MISP

## Timeline

- 2026-09-22: disclosed: Vulnerability published on NVD
- 2026-09-22: patched: Fix committed to unregister phar stream wrapper in entry points

## References

- [https://github.com/MISP/MISP/commit/08fa755b6](https://github.com/MISP/MISP/commit/08fa755b6)

## Related threats

- [MISP module plugin settings flags not preserved](https://junglewise.ai/threats/cve-2026-112192-misp-contains-a-vulnerability-in-the-handling-of-module-plugin)
- [MISP server settings information disclosure](https://junglewise.ai/threats/cve-2026-112188-misp-contains-a-vulnerability-in-its-server-settings-lookup)
- [MISP reflected XSS in workflow module interface](https://junglewise.ai/threats/cve-2026-112184-misp-contains-a-reflected-cross-site-scripting-xss-vulnerability)
- [MISP data integrity flaw in event deletion logic](https://junglewise.ai/threats/cve-2026-112180-misp-contains-a-data-integrity-flaw-in-its-event-deletion-logic)
- [MISP event synchronization information disclosure via tag filtering](https://junglewise.ai/threats/cve-2026-112179-in-misp-the-event-synchronization-process-contained-a-logic)