DEBIAN-CVE-2026-27459

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Source
https://security-tracker.debian.org/tracker/CVE-2026-27459
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27459.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-27459
Upstream
Published
2026-03-18T00:16:19.273Z
Modified
2026-03-18T12:01:22.896294Z
Severity
  • 7.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to set_cookie_generate_callback returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.

References

Affected packages

Debian:11 / pyopenssl

Package

Name
pyopenssl
Purl
pkg:deb/debian/pyopenssl?arch=source

Affected ranges

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

Affected versions

20.*
20.0.1-1
21.*
21.0.0-1
22.*
22.1.0-1
22.1.0+really21.0.0-1
23.*
23.0.0-1
23.2.0-1
24.*
24.0.0-1
24.0.0-2
24.0.0-3
24.0.0-4
24.0.0-5
24.1.0-1
24.2.1-1
24.3.0-1
25.*
25.0.0-1
25.1.0-1
25.1.0-2
25.3.0-1
25.3.0-2
26.*
26.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27459.json"

Debian:12 / pyopenssl

Package

Name
pyopenssl
Purl
pkg:deb/debian/pyopenssl?arch=source

Affected ranges

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

Affected versions

23.*
23.0.0-1
23.2.0-1
24.*
24.0.0-1
24.0.0-2
24.0.0-3
24.0.0-4
24.0.0-5
24.1.0-1
24.2.1-1
24.3.0-1
25.*
25.0.0-1
25.1.0-1
25.1.0-2
25.3.0-1
25.3.0-2
26.*
26.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27459.json"

Debian:13 / pyopenssl

Package

Name
pyopenssl
Purl
pkg:deb/debian/pyopenssl?arch=source

Affected ranges

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

Affected versions

25.*
25.0.0-1
25.1.0-1
25.1.0-2
25.3.0-1
25.3.0-2
26.*
26.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27459.json"

Debian:14 / pyopenssl

Package

Name
pyopenssl
Purl
pkg:deb/debian/pyopenssl?arch=source

Affected ranges

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

Affected versions

25.*
25.0.0-1
25.1.0-1
25.1.0-2
25.3.0-1
25.3.0-2
26.*
26.0.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27459.json"