DEBIAN-CVE-2026-126073

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Source
https://security-tracker.debian.org/tracker/CVE-2026-126073
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126073.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-126073
Upstream
Published
2026-11-10T21:19:25Z
Modified
2026-11-11T11:00:06Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
Summary
[none]
Details

Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, Action Pack negotiates the format of a rendered response from the Accept, X-Requested-With and, for XHR requests without Accept, Content-Type request headers, but ActionController::Rendering#_set_vary_header adds Vary: Accept only when the request carries a usable Accept header and the response has no Vary header yet. A response to a request without Accept, or to an XHR request, therefore omits the headers that selected its representation, and a response whose Vary the application set before rendering (for example Vary: Accept-Language) never gains Accept. A shared cache that honours Vary could store such a response and serve it to later clients that request a different representation, possibly leading to cache poisoning in which visitors receive, until the entry expires, a page without its layout or HTML in place of JSON. The attacker cannot choose the content of the response. Applications that render negotiated responses from actions marked public (for example with expires_in ..., public: true) behind a shared cache that honours Vary, such as Thruster or Rack::Cache, are affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.

References

Affected packages

Debian:12 / rails

Package

Name
rails
Purl
pkg:deb/debian/rails?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2:6.*
2:6.1.7.3+dfsg-1
2:6.1.7.3+dfsg-2~deb12u1
2:6.1.7.3+dfsg-2
2:6.1.7.3+dfsg-3
2:6.1.7.3+dfsg-4
2:6.1.7.3+dfsg-5
2:6.1.7.3+dfsg-6
2:6.1.7.3+dfsg-7~exp1
2:6.1.7.3+dfsg-7
2:6.1.7.3+dfsg-8
2:6.1.7.3+dfsg-9
2:6.1.7.3+dfsg-10
2:6.1.7.3+dfsg-11
2:6.1.7.3+dfsg-12
2:6.1.7.3+dfsg-13
2:6.1.7.10+dfsg-1~deb12u1
2:6.1.7.10+dfsg-1~deb12u2
2:6.1.7.10+dfsg-1~deb12u3
2:7.*
2:7.2.2.1+dfsg-1~exp1
2:7.2.2.1+dfsg-1~exp2
2:7.2.2.1+dfsg-1~exp3
2:7.2.2.1+dfsg-1~exp4
2:7.2.2.1+dfsg-1~exp6
2:7.2.2.1+dfsg-1
2:7.2.2.1+dfsg-2
2:7.2.2.1+dfsg-3
2:7.2.2.1+dfsg-4
2:7.2.2.1+dfsg-5
2:7.2.2.1+dfsg-6
2:7.2.2.1+dfsg-7
2:7.2.2.2+dfsg-1
2:7.2.2.2+dfsg-2~deb13u1
2:7.2.2.2+dfsg-2~deb13u2
2:7.2.2.2+dfsg-2
2:7.2.3+dfsg-1
2:7.2.3+dfsg-2
2:7.2.3+dfsg-3
2:7.2.3.1+dfsg-1
2:7.2.3.2+dfsg-1
2:7.2.3.2+dfsg-2
2:7.2.3.2+dfsg-3
2:7.2.4+dfsg-1
2:7.2.4+dfsg-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126073.json"

Debian:13 / rails

Package

Name
rails
Purl
pkg:deb/debian/rails?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2:7.*
2:7.2.2.1+dfsg-7
2:7.2.2.2+dfsg-1
2:7.2.2.2+dfsg-2~deb13u1
2:7.2.2.2+dfsg-2~deb13u2
2:7.2.2.2+dfsg-2
2:7.2.3+dfsg-1
2:7.2.3+dfsg-2
2:7.2.3+dfsg-3
2:7.2.3.1+dfsg-1
2:7.2.3.2+dfsg-1
2:7.2.3.2+dfsg-2
2:7.2.3.2+dfsg-3
2:7.2.4+dfsg-1
2:7.2.4+dfsg-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126073.json"

Debian:14 / rails

Package

Name
rails
Purl
pkg:deb/debian/rails?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2:7.*
2:7.2.2.1+dfsg-7
2:7.2.2.2+dfsg-1
2:7.2.2.2+dfsg-2~deb13u1
2:7.2.2.2+dfsg-2~deb13u2
2:7.2.2.2+dfsg-2
2:7.2.3+dfsg-1
2:7.2.3+dfsg-2
2:7.2.3+dfsg-3
2:7.2.3.1+dfsg-1
2:7.2.3.2+dfsg-1
2:7.2.3.2+dfsg-2
2:7.2.3.2+dfsg-3
2:7.2.4+dfsg-1
2:7.2.4+dfsg-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126073.json"