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Haproxy vulnerabilities

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haproxy, haproxy enterprise edition, kubernetes ingress controller +1 more +3 more HAProxy 3.2 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service ... CVE-2026-110353 Fix available 7.5 HighOctober 22, 2026
haproxy, haproxy enterprise edition, kubernetes ingress controller +1 more +3 more HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service ... CVE-2026-110354 Fix available 7.5 HighOctober 22, 2026
haproxy data plane api ce, data plane api ee +1 more In HAProxy Data Plane API 2.2.0 through 3.4.3 (and corresponding Enterprise Edition releases),... CVE-2026-109575 9.8 CriticalOctober 12, 2026
haproxy An issue was discovered in HAProxy 3.3.0 through 3.4.4 and in 3.5-dev1 through 3.5-dev5.... CVE-2026-90678 Fix available 7.5 HighSeptember 13, 2026
haproxy HAProxy - NULL Pointer Dereference in hpack_dht_insert Function CVE-2026-55204 Fix available 8.7 HighJune 18, 2026
haproxy HAProxy - Integer Overflow in FCGI Demux Record Length Field CVE-2026-55203 Fix available 9.0 CriticalJune 18, 2026
haproxy An issue was discovered in HAProxy before 3.3.6. The HTTP/3 parser does not check that the... CVE-2026-33555 Public exploitFix available 4.0 MediumApril 13, 2026
haproxy aloha, haproxy, haproxy enterprise +2 more HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because... CVE-2026-26080 Public exploitFix available 3.7 LowFebruary 27, 2026
haproxy aloha, haproxy, haproxy enterprise +2 more HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN... CVE-2026-26081 Fix available 4.8 MediumFebruary 12, 2026
haproxy kubernetes ingress controller HAProxy Kubernetes Ingress Controller before 3.1.13, when the config-snippets feature flag is... CVE-2025-59303 6.4 MediumOctober 8, 2025
haproxy, haproxy aloha appliance, enterprise +2 more +4 more Denial of service vulnerability in HAProxy mjson library CVE-2025-11230 Fix available 7.5 HighOctober 2, 2025
haproxy HAProxy 2.2 through 3.1.6, in certain uncommon configurations, has a sample_conv_regsub heap... CVE-2025-32464 Fix available 6.8 MediumApril 9, 2025
haproxy, haproxy project 2.6, 2.8 +2 more +4 more Inconsistent interpretation of HTTP requests ('HTTP Request/Response Smuggling') issue exists in... CVE-2024-53008 Fix available 5.3 MediumNovember 28, 2024
haproxy HAProxy 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... CVE-2024-45506 Fix available 7.5 HighSeptember 4, 2024
haproxy HAProxy before 2.8.2 accepts # as part of the URI component, which might allow remote attackers... CVE-2023-45539 Public exploitFix available 8.2 HighNovember 28, 2023
haproxy HAProxy 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... CVE-2023-40225 Fix available 7.2 HighAugust 10, 2023
haproxy HTTP request/response smuggling vulnerability in HAProxy version 2.7.0, and 2.6.1 to 2.6.7 allows... CVE-2023-25950 Public exploitFix available 7.3 HighApril 11, 2023
haproxy An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4... CVE-2023-0836 Fix available 7.5 HighMarch 27, 2023
haproxy, debian linux +1 more HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are... CVE-2023-25725 Public exploitFix available 9.1 CriticalFebruary 14, 2023
haproxy, fedoraproject extra packages for enterprise linux, fedora +6 more +8 more An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash... CVE-2023-0056 Fix available 6.5 MediumJanuary 18, 2023
haproxy, debian linux, redhat enterprise linux +2 more +4 more A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header.... CVE-2022-0711 Fix available EPSS 16.6% 7.5 HighMarch 2, 2022
haproxy, debian linux, fedoraproject fedora +2 more An integer overflow exists in HAProxy 2.0 through 2.5 in the htx_add_header() can be exploited to... CVE-2021-40346 Public exploitFix available EPSS 58.8% 7.5 HighSeptember 7, 2021
haproxy, debian linux, fedoraproject fedora +2 more An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It... CVE-2021-39242 Fix available 7.5 HighAugust 17, 2021
haproxy, debian linux, fedoraproject fedora +2 more An 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... CVE-2021-39241 Fix available 5.3 MediumAugust 17, 2021
haproxy, debian linux, fedoraproject fedora +2 more An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It... CVE-2021-39240 Fix available 7.5 HighAugust 17, 2021
haproxy, canonical ubuntu linux, debian linux +3 more +5 more In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4,... CVE-2020-11100 Fix available EPSS 61.6% 8.8 HighApril 2, 2020
haproxy, canonical ubuntu linux, debian linux +2 more The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by... CVE-2019-19330 Fix available 9.8 CriticalNovember 27, 2019
haproxy A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding... CVE-2019-18277 Fix available EPSS 10.1% 7.5 HighOctober 23, 2019
haproxy proxyprotocol mastercactapus proxyprotocol vulnerable to denial of service CVE-2019-14243 Fix available 7.5 HighJuly 23, 2019
haproxy HAProxy through 2.0.2 allows attackers to cause a denial of service (ha_panic) via vectors... CVE-2019-14241 Fix available EPSS 70.2% 7.5 HighJuly 23, 2019
haproxy HAProxy before 1.9.7 mishandles a reload with rotated keys, which triggers use of uninitialized,... CVE-2019-11323 5.9 MediumMay 9, 2019
haproxy, canonical ubuntu linux, opensuse leap +2 more +4 more An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1... CVE-2018-20615 Fix available 7.5 HighDecember 31, 2018
haproxy, canonical ubuntu linux, redhat openshift container platform +2 more An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer,... CVE-2018-20103 Fix available 7.5 HighDecember 12, 2018
haproxy, canonical ubuntu linux, redhat openshift container platform +2 more An out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8... CVE-2018-20102 Fix available 7.5 HighDecember 12, 2018
[unknown] haproxy, canonical ubuntu linux, redhat enterprise linux +2 more +4 more A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An... CVE-2018-14645 Fix available 7.5 HighSeptember 21, 2018
haproxy, canonical ubuntu linux +1 more Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0... CVE-2018-11469 Fix available 5.9 MediumMay 25, 2018
haproxy, redhat enterprise linux +1 more An issue was discovered in HAProxy before 1.8.8. The incoming H2 frame length was checked against... CVE-2018-10184 Fix available 7.5 HighMay 9, 2018
haproxy HAProxy statistics in openstack-tripleo-image-elements are non-authenticated over the network. CVE-2016-2102 5.3 MediumAugust 22, 2017
haproxy, canonical ubuntu linux +1 more HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to... CVE-2016-5360 Fix available EPSS 42.8% 7.5 HighJune 10, 2016
haproxy, canonical ubuntu linux, debian linux +9 more +11 more The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly... CVE-2015-3281 Fix available 5.0 MediumJuly 5, 2015
haproxy Multiple integer overflows in the http_request_forward_body function in proto_http.c in HAProxy 1... CVE-2014-6269 Fix available 5.0 MediumSeptember 30, 2014
haproxy, canonical ubuntu linux, debian linux +1 more +3 more HAProxy 1.4 before 1.4.24 and 1.5 before 1.5-dev19, when configured to use hdr_ip or other "hdr_*... CVE-2013-2175 Fix available 5.0 MediumJune 19, 2013
haproxy Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive... CVE-2013-1912 Fix available 5.1 MediumApril 10, 2013
haproxy Buffer overflow in the trash buffer in the header capture functionality in HAProxy before 1.4.21,... CVE-2012-2942 Fix available 5.1 MediumMay 27, 2012