CVE-2026-110353
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
HAProxy
- Vendor
- HAProxy
- Product
- HAProxy
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.2.0 | affected | custom | 3.2.26 | Unavailable | None listed |
| 3.3.0 | affected | custom | 3.3.17 | Unavailable | None listed |
| 3.4.0 | affected | custom | 3.4.6 | Unavailable | None listed |
| 3.5-dev | affected | custom | 3.5-dev9 | Unavailable | None listed |
HAProxy Enterprise Edition
- Vendor
- HAProxy
- Product
- HAProxy Enterprise Edition
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.2.0r1 | affected | custom | 3.2r1-378.1259 | Unavailable | None listed |
| 3.3.0r1 | affected | custom | 3.3r1-377.1005 | Unavailable | None listed |
Kubernetes Ingress Controller
- Vendor
- HAProxy
- Product
- Kubernetes Ingress Controller
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.2.0 | affected | custom | 3.2.17 | Unavailable | None listed |
Kubernetes Ingress Controller Enterprise
- Vendor
- Haproxy
- Product
- Kubernetes Ingress Controller Enterprise
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.2.0 | affected | custom | 3.2.17-ee1 | Unavailable | None listed |
| 3.0 | affected | custom | 3.0.16-ee17 | Unavailable | None listed |
| 1.11 | affected | custom | 1.11.14-ee11 | Unavailable | None listed |