CVE-2015-7519

mediumpriority · track · 16EPSS 0.024 · 84 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.36% (84th) EPSS

CVSS 4.3 · medium

Is it mine?

26 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.4–4.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.03.7lowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 1.4

v3.03.7lowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · OSV

v3.03.4lowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (26)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
phusionpassenger phusion passenger≤ 4.0.59nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.0nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.1nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.10nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.11nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.12nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.13nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.14nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.15nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.16nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.17nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.18nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.19nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.2nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.20nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.21nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.3nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.4nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
phusionpassenger phusion passenger= 5.0.5nvdUScpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*

showing 20 of 26

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-fxwv-953p-7qpfPhusion Passenger allows remote attackers to spoof headers2018-10-10ghsa · osvUS
`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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2016-01-08modified 2026-06-17

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+25188 more

references (22)

External citations — patches, advisories, analysis.

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