DEBIAN-CVE-2026-6665

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Source
https://security-tracker.debian.org/tracker/CVE-2026-6665
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6665.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-6665
Upstream
  • CVE-2026-6665
Published
2026-05-09T01:16:09Z
Modified
2026-09-14T17:03:28Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

The SCRAM code in PgBouncer before 1.25.2 did not check the return value of strlcat() correctly when building the contents of the SCRAM client-final-message. A malicious backend that sends a SCRAM server-final-message with a long nonce can trigger a stack overflow.

References

Affected packages

Debian:12 / pgbouncer

Package

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

Affected ranges

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

Affected versions

1.*
1.18.0-1
1.18.0-1+deb12u1
1.19.0-1
1.19.1-1
1.20.0-1
1.20.1-1
1.21.0-1
1.22.0-1
1.22.1-1
1.23.0-1
1.23.1-1
1.24.0-2
1.24.0-3
1.24.1-1
1.25.0-1
1.25.0-2
1.25.1-1
1.25.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6665.json"

Debian:13 / pgbouncer

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.24.1-1+deb13u2

Affected versions

1.*
1.24.1-1
1.24.1-1+deb13u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6665.json"

Debian:14 / pgbouncer

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.25.2-1

Affected versions

1.*
1.24.1-1
1.25.0-1
1.25.0-2
1.25.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6665.json"