ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privileges or possibly change the o

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• phusion passengerup to 4.0.5 inclusive
• phusion passenger4.0.1
• phusion passenger4.0.2
• phusion passenger4.0.3
• phusion passenger4.0.4

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2018-12026During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applicatio
  40Plan
• CVE-2018-12027An Insecure Permissions vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 causes information disclosure in the following
  35Monitor
• CVE-2012-6135RubyGems passenger 4.0.0 betas 1 and 2 allows remote attackers to delete arbitrary files during the startup process.
  31Monitor
• CVE-2018-12028An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious applic
  31Monitor
• CVE-2016-10345In Phusion Passenger before 5.1.0, a known /tmp filename was used during passenger-install-nginx-module execution, which could allow local a
  31Monitor
• CVE-2025-26803The http parser in Phusion Passenger 6.0.21 through 6.0.25 before 6.0.26 allows a denial of service during parsing of a request with an inva
  30Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.