CVE-2015-7576

mediumpriority · track · 17EPSS 0.049 · 92 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

4.88% (92nd) EPSS

CVSS 4.3 · medium

Is it mine?

57 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The http_basic_authenticate_with method in actionpack/lib/action_controller/metal/http_authentication.rb in the Basic Authentication implementation in Action Controller in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to bypass authentication by measuring timing differences.

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:P/I:N/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:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 1.4

v2.04.3mediumAV:N/AC:M/Au:N/C:P/I:N/A:Nsecondary · FSTEC (BDU) RU

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

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-254USprimaryCWE-254US

affected products (57)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Open Source Ruby on Rails <3.2.22.1all versionscert_bundDE
Open Source Ruby on Rails <4.1.14.1all versionscert_bundDE
Open Source Ruby on Rails <4.2.5.1all versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE Linux Enterprise Serverall versionscert_bundDEcpe:/o:suse:linux_enterprise_server:suseenterprisehighavailabilityextension11sp3
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Open Source Ruby on Rails< 3.2.22.1cert_bundDE
Open Source Ruby on Rails< 4.1.14.1cert_bundDE
Open Source Ruby on Rails< 4.2.5.1cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Rails Core Team Ruby on Rails≤ 3.2.22.1fstec_bduRU
Rails Core Team Ruby on Rails4.0 → 4.1.14.1fstec_bduRU
Rails Core Team Ruby on Rails4.2 → 4.2.5.1fstec_bduRU
Rails Core Team Ruby on Rails5 → 5.0.0.beta1.1fstec_bduRU
rubyonrails rails= 4.0.0nvdUScpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
rubyonrails rails= 4.0.1nvdUScpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
rubyonrails rails= 4.0.10nvdUScpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
rubyonrails rails= 4.0.2nvdUScpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
rubyonrails rails= 4.0.3nvdUScpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*

showing 20 of 57

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1085Ruby on Rails: Mehrere SchwachstellenDeutsch2016-01-25csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Ruby on Rails ausnutzen, um Sicherheitsfunktionen zu umgehen, um Dateien zu manipulieren oder um einen Denial of Service Zustand herbeizuführen.
GHSA-p692-7mm3-3fxgactionpack is vulnerable to remote bypass authentication2017-10-24ghsa · osvUS
The http_basic_authenticate_with method in actionpack/lib/action_controller/metal/http_authentication.rb in the Basic Authentication implementation in Action Controller in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to bypass authentication by measuring timing differences.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

published 2016-02-16modified 2026-06-17

related (800)

Related entries.

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+795 more

references (40)

External citations — patches, advisories, analysis.

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