Is CVE-2026-73699 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-73699 being exploited in the wild.

How severe is CVE-2026-73699?

High severity, with a CVSS score of 7.2, published 10 September 2026.

Is there a fix for CVE-2026-73699?

A patch was published on 2026-09-06: Fixed in FileRun 2026.3.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-73699 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-73699?

Check whether you run FileRun 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.

CVE-2026-73699: FileRun PHP object injection in permission deserialization

CVE-2026-73699 · Severity: high · CVSS 7.2 · Published 2026-09-10

FileRun is a self-hosted file management and sharing platform. A PHP object injection flaw in the permissions system allows authenticated attackers with database write access to execute arbitrary code by injecting malicious serialized objects. When combined with a separate SQL injection vulnerability, attackers can escalate from delegated administrator privileges to full remote code execution.

Technologies: FileRun. Vendors: FileRun.

Quick answers

Is CVE-2026-73699 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-73699 being exploited in the wild.
How severe is CVE-2026-73699?: High severity, with a CVSS score of 7.2, published 10 September 2026.
Which products and versions are affected?: FileRun before 2026.3.0.
Is there a fix for CVE-2026-73699?: A patch was published on 2026-09-06: Fixed in FileRun 2026.3.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-73699 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-73699?: Check whether you run FileRun 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.

Technical details

CVE-2026-73699 is a PHP object injection (deserialization) vulnerability in the Perms::getPerms() method caused by improper use of unserialize(). The vulnerability occurs because the code passes a positional array instead of a named-key array to disable class instantiation, allowing attackers to instantiate arbitrary classes. While this vulnerability requires initial database write access, it is weaponized by CVE-2026-73698 (a SQL injection affecting delegated administrators) to write arbitrary files to web-accessible paths. The payload executes on every authenticated page load, making it a reliable exploitation vector. FileRun 2026.3.0 (released September 6, 2026) patches this vulnerability; prior versions including 2026.2.0 and 2026.2.1 are affected.

Affected products

FileRun FileRun before 2026.3.0

Timeline

2026-09-10: disclosed
2026-09-06: patched: Fixed in FileRun 2026.3.0

References

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