DEBIAN-CVE-2026-73500

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-73500
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73500.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-73500
Upstream
Published
2026-08-12T22:17:17Z
Modified
2026-09-01T16:07:01Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a network attacker who can reach an etcd TLS listener can open many TCP connections and never send a ClientHello. In client/pkg/transport/listener_tls.go, each connection handled by tlsListener.acceptLoop spawns a goroutine that blocks indefinitely inside tls.Conn.Handshake() and remains tracked in the pending map. Unbounded goroutine and map growth can exhaust memory in the etcd process, causing loss of availability for the cluster and, when etcd backs Kubernetes, the control plane. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.

References

Affected packages

Debian:12 / etcd

Package

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

Affected ranges

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

Affected versions

3.*
3.4.23-4
3.4.23-5
3.4.23-6
3.4.30-1
3.4.30-2
3.4.30-3
3.5.5-1
3.5.15-1
3.5.15-2
3.5.15-3
3.5.15-4
3.5.15-5
3.5.15-6
3.5.15-7
3.5.16-1
3.5.16-2
3.5.16-3
3.5.16-4
3.5.16-5
3.5.16-6
3.5.16-7
3.5.16-8
3.5.16-9
3.5.16-10
3.5.16-11
3.5.22-1
3.5.22-2
3.5.30-1~exp1
3.5.30-1~exp2
3.5.30-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73500.json"

Debian:13 / etcd

Package

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

Affected ranges

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

Affected versions

3.*
3.5.16-4
3.5.16-5
3.5.16-6
3.5.16-7
3.5.16-8
3.5.16-9
3.5.16-10
3.5.16-11
3.5.22-1
3.5.22-2
3.5.30-1~exp1
3.5.30-1~exp2
3.5.30-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73500.json"

Debian:14 / etcd

Package

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

Affected ranges

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

Affected versions

3.*
3.5.16-4
3.5.16-5
3.5.16-6
3.5.16-7
3.5.16-8
3.5.16-9
3.5.16-10
3.5.16-11
3.5.22-1
3.5.22-2
3.5.30-1~exp1
3.5.30-1~exp2
3.5.30-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73500.json"