DEBIAN-CVE-2026-110353

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Source
https://security-tracker.debian.org/tracker/CVE-2026-110353
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110353.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-110353
Upstream
  • CVE-2026-110353
Published
2026-10-22T03:16:31Z
Modified
2026-10-24T14:00:06Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

HAProxy 3.2 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (worker-thread CPU exhaustion) via a truncated HTTP/2 PING frame. h2c_handle_ping in src/mux_h2.c does not check for a short read, unlike the other H2 frame handlers. Because the incomplete frame cannot be processed, its data is never consumed, and the H2 multiplexer tasklet is repeatedly woken by that pending data without making progress. The CPU spins until timeout http-request closes the connection, and an attacker opening many such connections can sustain high CPU usage.

References

Affected packages

Debian:12 / haproxy

Package

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

Affected ranges

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

Affected versions

2.*
2.6.12-1
2.6.12-1+deb12u1
2.6.12-1+deb12u2
2.6.12-1+deb12u3
2.6.12-1+deb12u4
2.6.13-1
2.6.14-1
2.6.15-1
2.7.0-1
2.7.1-1
2.7.2-1
2.7.2-2
2.7.3-1
2.7.4-1
2.7.5-1
2.7.6-1
2.7.7-1
2.7.8-1
2.8.0-1
2.8.1-1
2.8.2-1
2.8.3-1
2.8.4-1
2.8.4-2
2.8.5-1
2.9.0-1
2.9.1-1
2.9.2-1
2.9.3-1
2.9.4-1
2.9.5-1
2.9.6-1
2.9.7-1
2.9.8-1
2.9.9-1
2.9.10-1
2.9.11-1
2.9.12-1
3.*
3.0.0-1
3.0.1-1
3.0.2-1
3.0.3-1
3.0.4-1
3.0.5-1
3.0.6-1
3.0.6-2
3.0.6-3
3.0.7-1
3.0.8-1
3.0.9-1
3.0.10-1
3.0.11-1
3.1.0-1
3.1.0-2
3.1.1-1
3.1.2-1
3.1.3-1
3.1.5-1
3.1.6-1
3.1.7-1
3.2.0-1
3.2.1-1
3.2.3-1
3.2.3-2
3.2.4-1
3.2.5-1
3.2.5-2
3.2.6-1
3.2.7-1
3.2.8-1
3.2.9-1
3.2.10-1
3.2.11-1
3.2.11-2
3.2.12-1
3.2.13-1
3.2.14-1
3.2.15-1
3.2.16-1
3.2.17-1
3.2.18-1
3.2.19-1
3.2.20-1
3.2.21-1
3.2.22-1
3.2.23-1
3.2.24-1
3.2.25-1
3.2.26-1
3.3.0-1
3.3.1-1
3.3.2-1
3.3.2-2
3.3.3-1
3.3.4-1
3.3.5-1
3.3.6-1
3.3.7-1
3.3.8-1
3.3.9-1
3.3.10-1
3.4.0-1
3.4.1-1
3.4.2-1
3.4.3-1
3.4.4-1
3.4.6-1
3.4.7-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110353.json"

Debian:13 / haproxy

Package

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

Affected ranges

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

Affected versions

3.*
3.0.11-1
3.0.11-1+deb13u1
3.0.11-1+deb13u2
3.0.11-1+deb13u3
3.0.11-1+deb13u4
3.1.0-1
3.1.0-2
3.1.1-1
3.1.2-1
3.1.3-1
3.1.5-1
3.1.6-1
3.1.7-1
3.2.0-1
3.2.1-1
3.2.3-1
3.2.3-2
3.2.4-1
3.2.5-1
3.2.5-2
3.2.6-1
3.2.7-1
3.2.8-1
3.2.9-1
3.2.10-1
3.2.11-1
3.2.11-2
3.2.12-1
3.2.13-1
3.2.14-1
3.2.15-1
3.2.16-1
3.2.17-1
3.2.18-1
3.2.19-1
3.2.20-1
3.2.21-1
3.2.22-1
3.2.23-1
3.2.24-1
3.2.25-1
3.2.26-1
3.3.0-1
3.3.1-1
3.3.2-1
3.3.2-2
3.3.3-1
3.3.4-1
3.3.5-1
3.3.6-1
3.3.7-1
3.3.8-1
3.3.9-1
3.3.10-1
3.4.0-1
3.4.1-1
3.4.2-1
3.4.3-1
3.4.4-1
3.4.6-1
3.4.7-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110353.json"

Debian:14 / haproxy

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.2.26-1

Affected versions

3.*
3.0.11-1
3.1.0-1
3.1.0-2
3.1.1-1
3.1.2-1
3.1.3-1
3.1.5-1
3.1.6-1
3.1.7-1
3.2.0-1
3.2.1-1
3.2.3-1
3.2.3-2
3.2.4-1
3.2.5-1
3.2.5-2
3.2.6-1
3.2.7-1
3.2.8-1
3.2.9-1
3.2.10-1
3.2.11-1
3.2.11-2
3.2.12-1
3.2.13-1
3.2.14-1
3.2.15-1
3.2.16-1
3.2.17-1
3.2.18-1
3.2.19-1
3.2.20-1
3.2.21-1
3.2.22-1
3.2.23-1
3.2.24-1
3.2.25-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110353.json"