CVSS 3.0
3.7 lowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NCVE-2015-7519
agent/Core/Controller/SendRequest.cpp in Phusion Passenger before 4.0.60 and 5.0.x before 5.0.22, when used in Apache integration mode or in standalone mode without a filtering proxy, allows remote attackers to spoof headers passed to applications by using an _ (underscore) character instead of a - (dash) character in an HTTP header, as demonstrated by an X_User header.
Severity
- EPSS
- 2.4% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- phusionpassenger:phusion_passenger
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fxwv-953p-7qpf | RubyGems | passenger | <4.0.60 | 4.0.60 |
| GHSA-fxwv-953p-7qpf | RubyGems | passenger | >=5.0.0 <5.0.22 | 5.0.22 |