DEBIAN-CVE-2026-34582

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Source
https://security-tracker.debian.org/tracker/CVE-2026-34582
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34582.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-34582
Upstream
Published
2026-04-07T22:16:22.810Z
Modified
2026-04-08T09:02:25.615208Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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

Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.

References

Affected packages

Debian:11 / botan

Package

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

Affected ranges

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

Affected versions

2.*
2.17.3+dfsg-2
2.17.3+dfsg-3
2.18.1+dfsg-1
2.18.1+dfsg-2
2.18.1+dfsg-3
2.18.2+dfsg-1
2.19.1+dfsg-1
2.19.1+dfsg-2
2.19.1+dfsg-3
2.19.2+dfsg-1
2.19.3+dfsg-1
2.19.4+dfsg-1
2.19.5+dfsg-1
2.19.5+dfsg-2
2.19.5+dfsg-3
2.19.5+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34582.json"

Debian:12 / botan

Package

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

Affected ranges

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

Affected versions

2.*
2.19.3+dfsg-1
2.19.3+dfsg-1+deb12u1
2.19.4+dfsg-1
2.19.5+dfsg-1
2.19.5+dfsg-2
2.19.5+dfsg-3
2.19.5+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34582.json"

Debian:13 / botan

Package

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

Affected ranges

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

Affected versions

2.*
2.19.5+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34582.json"

Debian:13 / botan3

Package

Name
botan3
Purl
pkg:deb/debian/botan3?arch=source

Affected ranges

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

Affected versions

3.*
3.7.1+dfsg-2
3.8.1+dfsg-1
3.9.0+dfsg-1
3.9.0+dfsg-2
3.9.0+dfsg-2.1
3.10.0+dfsg-1
3.10.0+dfsg-2
3.11.0+dfsg-1
3.11.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34582.json"

Debian:14 / botan3

Package

Name
botan3
Purl
pkg:deb/debian/botan3?arch=source

Affected ranges

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

Affected versions

3.*
3.7.1+dfsg-2
3.8.1+dfsg-1
3.9.0+dfsg-1
3.9.0+dfsg-2
3.9.0+dfsg-2.1
3.10.0+dfsg-1
3.10.0+dfsg-2
3.11.0+dfsg-1
3.11.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34582.json"