HA
Vendor
haproxy
10 products with CVEs on record
53
CVEs
0
On KEV
8
New 30D
Products
Recent CVEs
CVEProductCVSSEPSSPublishedSummary
CVE-2026-110353
New
HA
HAProxy
HAProxy
7.5
1%
Oct 22HAProxy 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
CVE-2026-110354
New
HE
HAProxy Enterprise Edition
HAProxy
7.5
1%
Oct 22HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worker-thread CPU exhaustion) via an HTTP/1.1 chunked request
CVE-2026-109575
DP
Data Plane API EE
HAProxy
9.8
0%
Oct 12In HAProxy Data Plane API 2.2.0 through 3.4.3 (and corresponding Enterprise Edition releases), Server.ConfigureAPI() has process-global authentication logic that improperly drops…
CVE-2026-90678
HA
HAProxy
HAProxy
7.5
1%
Sep 13An issue was discovered in HAProxy 3.3.0 through 3.4.4 and in 3.5-dev1 through 3.5-dev5
CVE-2026-26081
HA
HAProxy
HAProxy
4.8
0%
Jul 20HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format
CVE-2026-26080
HA
HAProxy
HAProxy
3.7
1%
Jul 20HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled
CVE-2026-55204
HA
haproxy
haproxy
7.5
0%
Jun 18HAProxy - NULL Pointer Dereference in hpack_dht_insert Function
CVE-2026-55203
HA
haproxy
haproxy
9.1
0%
Jun 18HAProxy - Integer Overflow in FCGI Demux Record Length Field
CVE-2026-33555
HA
HAProxy
HAProxy
5.8
0%
Apr 13An issue was discovered in HAProxy before 3.3.6
CVE-2025-11230
KI
Kubernetes Ingress Controller
Haproxy
7.5
1%
Nov 19Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests
CVE-2024-45506
HA
Haproxy
Haproxy
7.5
1%
Sep 4HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of…
CVE-2023-45539
HA
Haproxy
Haproxy
8.2
2%
Nov 28HAProxy before 2.8.2 accepts # as part of the URI component, which might allow remote attackers to obtain sensitive information or have unspecified other impact upon…
CVE-2023-40225
HA
Haproxy
Haproxy
7.2
2%
Aug 10HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty…
CVE-2023-25950
HA
Haproxy
Haproxy
7.3
3%
Apr 11HTTP request/response smuggling vulnerability in HAProxy version 2.7.0, and 2.6.1 to 2.6.7 allows a remote attacker to alter a legitimate user's request
CVE-2023-0836
HA
Haproxy
Haproxy
7.5
1%
Mar 29An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1
CVE-2023-0056
HA
Haproxy
Haproxy
6.5
2%
Mar 23An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the service
CVE-2023-25725
HA
Haproxy
Haproxy
9.1
5%
Feb 14HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in…
CVE-2022-0711
HA
Haproxy
Haproxy
7.5
17%
Mar 2A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header
CVE-2021-40346
HA
Haproxy
Haproxy
7.5
59%
Sep 8An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all…
CVE-2021-39242
HA
Haproxy
Haproxy
7.5
2%
Aug 17An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3
CVE-2021-39241
HA
Haproxy
Haproxy
5.3
2%
Aug 17An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3
CVE-2021-39240
HA
Haproxy
Haproxy
7.5
2%
Aug 17An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3
CVE-2020-11100
HA
Haproxy
Haproxy
8.8
62%
Apr 2In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap…
CVE-2019-19330
HA
Haproxy
Haproxy
9.8
4%
Nov 27The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL,…
CVE-2019-18277
HA
Haproxy
Haproxy
7.5
10%
Oct 23A flaw was found in HAProxy before 2.0.6
CVE-2019-14243
PR
Proxyprotocol
Haproxy
7.5
4%
Jul 23headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a…
CVE-2019-14241
HA
Haproxy
Haproxy
7.5
70%
Jul 23HAProxy through 2.0.2 allows attackers to cause a denial of service (ha_panic) via vectors related to htx_manage_client_side_cookies in proto_htx.c
CVE-2019-11323
HA
Haproxy
Haproxy
5.9
1%
May 9HAProxy before 1.9.7 mishandles a reload with rotated keys, which triggers use of uninitialized, and very predictable, HMAC keys
CVE-2018-20615
HA
Haproxy
Haproxy
7.5
4%
Mar 18An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash
CVE-2018-20103
HA
Haproxy
Haproxy
7.5
7%
Dec 12An issue was discovered in dns.c in HAProxy through 1.8.14
CVE-2018-20102
HA
Haproxy
Haproxy
7.5
4%
Dec 12An out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8.14
CVE-2018-14645
HA
Haproxy
Haproxy
7.5
3%
Sep 21A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2
CVE-2018-11469
HA
Haproxy
Haproxy
5.9
3%
May 25Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure…
CVE-2018-10184
HA
Haproxy
Haproxy
7.5
8%
May 9An issue was discovered in HAProxy before 1.8.8
CVE-2016-2102
HA
Haproxy
Haproxy
5.3
2%
Aug 22HAProxy statistics in openstack-tripleo-image-elements are non-authenticated over the network
CVE-2016-5360
HA
Haproxy
Haproxy
7.5
43%
Jun 30HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service (uninitialized memory access and crash) or possibly have…
CVE-2015-3281
HA
Haproxy
Haproxy
–
4%
Jul 6The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outgoing data, which allows remote…
CVE-2014-6269
HA
Haproxy
Haproxy
–
4%
Sep 30Multiple integer overflows in the http_request_forward_body function in proto_http.c in HAProxy 1.5-dev23 before 1.5.4 allow remote attackers to cause a denial of service (crash)…
CVE-2013-2175
HA
Haproxy
Haproxy
–
4%
Aug 19HAProxy 1.4 before 1.4.24 and 1.5 before 1.5-dev19, when configured to use hdr_ip or other "hdr_*" functions with a negative occurrence count, allows remote attackers to cause a…
CVE-2013-1912
HA
Haproxy
Haproxy
–
6%
Apr 10Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite…
CVE-2012-2942
HA
Haproxy
Haproxy
–
5%
May 27Buffer overflow in the trash buffer in the header capture functionality in HAProxy before 1.4.21, when global.tune.bufsize is set to a value greater than the default and header…