passenger Known Vulnerabilities & Fixes
passenger has 7 known security vulnerabilities in RubyGems (Ruby). Upgrade to version 6.0.26 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.
Low Immediate Risk
No actively exploited vulnerabilities detected. Monitor and update in your next maintenance window.
Recommended safe version: 6.0.26
Upgrading to 6.0.26 or later resolves all 7 known vulnerabilities in passenger. Run: gem install passenger -v 6.0.26
Is passenger in your project?
Check if you're affected and upgrade to 6.0.26 to stay secure.
Security Summary
- 7 affected version ranges have been identified across these 7 advisories.
- 100% of known issues have a published fixed version.
- Remediation: gem update passenger
Vulnerabilities
7 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details. First disclosed Aug 21, 2018, most recently Feb 24, 2025 (2379 days apart).
| CVE / GHSA | Severity | Affected | Fixed In |
|---|---|---|---|
| CVE-2018-12026 Phusion Passenger SpawningKit Contains Arbitrary Read/Write Vulnerability | CRITICAL | 5.3.0, 5.3.1 | 5.3.2 |
| CVE-2018-12027 Insecure Permissions in Phusion Passenger | HIGH | 5.3.0, 5.3.1 | 5.3.2 |
| CVE-2018-12028 Incorrect Access Control in Phusion Passenger | HIGH | 5.3.0, 5.3.1 | 5.3.2 |
| CVE-2016-10345 Phusion Passenger uses a known /tmp filename | HIGH | 1.0.1, 1.0.2, 1.0.3, 1.0.4 (+140 more) | 5.1.0 |
| CVE-2012-6135 RubyGems passenger gem allows remote attackers to delete files | HIGH | 1.0.1, 1.0.2, 1.0.3, 1.0.4 (+51 more) | 4.0.0.rc4 |
| CVE-2018-12029 Phusion Passenger Race Condition Allows Privilege Escalation | HIGH | 3.0.0, 3.0.1, 3.0.10, 3.0.11 (+126 more) | 5.3.2 |
| CVE-2025-26803 Phusion Passenger denial of service | MEDIUM | 6.0.21, 6.0.22, 6.0.23, 6.0.24 (+1 more) | 6.0.26 |
About This Data
Vulnerability data for passenger is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.
CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Related RubyGems (Ruby) Packages
Other packages in this ecosystem, ranked by shared vulnerabilities where available.
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