Search criteria
33 vulnerabilities by HAProxy
CVE-2025-59303 (GCVE-0-2025-59303)
Vulnerability from cvelistv5 – Published: 2025-10-08 00:00 – Updated: 2025-10-08 17:10
VLAI?
Summary
HAProxy Kubernetes Ingress Controller before 3.1.13, when the config-snippets feature flag is used, accepts config snippets from users with create/update permissions. This can result in obtaining an ingress token secret as a response. The fixed versions of HAProxy Enterprise Kubernetes Ingress Controller are 3.0.16-ee1, 1.11.13-ee1, and 1.9.15-ee1.
Severity ?
6.4 (Medium)
CWE
- CWE-791 - Incomplete Filtering of Special Elements
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| HAProxy | HAProxy Kubernetes Ingress Controller |
Affected:
0 , < 3.1.13
(custom)
|
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CVE-2025-32464 (GCVE-0-2025-32464)
Vulnerability from cvelistv5 – Published: 2025-04-09 00:00 – Updated: 2025-04-23 22:03
VLAI?
Summary
HAProxy 2.2 through 3.1.6, in certain uncommon configurations, has a sample_conv_regsub heap-based buffer overflow because of mishandling of the replacement of multiple short patterns with a longer one.
Severity ?
6.8 (Medium)
CWE
- CWE-1025 - Comparison Using Wrong Factors
Assigner
References
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CVE-2024-45506 (GCVE-0-2024-45506)
Vulnerability from cvelistv5 – Published: 2024-09-04 00:00 – Updated: 2025-03-14 19:16
VLAI?
Summary
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 denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of conditions, as exploited in the wild in 2024.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
References
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CVE-2023-45539 (GCVE-0-2023-45539)
Vulnerability from cvelistv5 – Published: 2023-11-28 00:00 – Updated: 2024-10-15 17:44
VLAI?
Summary
HAProxy 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 misinterpretation of a path_end rule, such as routing index.html#.png to a static server.
Severity ?
8.2 (High)
CWE
- n/a
Assigner
References
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CVE-2023-40225 (GCVE-0-2023-40225)
Vulnerability from cvelistv5 – Published: 2023-08-10 00:00 – Updated: 2024-10-09 20:14
VLAI?
Summary
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 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret the payload as an extra request.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |
|---|---|---|
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CVE-2023-25950 (GCVE-0-2023-25950)
Vulnerability from cvelistv5 – Published: 2023-04-11 00:00 – Updated: 2025-02-11 15:41
VLAI?
Summary
HTTP 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. As a result, the attacker may obtain sensitive information or cause a denial-of-service (DoS) condition.
Severity ?
7.3 (High)
CWE
- Inconsistent interpretation of HTTP requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| HAProxy Technologies | HAProxy |
Affected:
version 2.7.0, and version 2.6.1 to 2.6.7
|
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CVE-2023-0836 (GCVE-0-2023-0836)
Vulnerability from cvelistv5 – Published: 2023-03-29 00:00 – Updated: 2025-02-18 16:42
VLAI?
Summary
An 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. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.
Severity ?
7.5 (High)
CWE
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
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CVE-2023-0056 (GCVE-0-2023-0056)
Vulnerability from cvelistv5 – Published: 2023-03-23 00:00 – Updated: 2025-02-25 19:35
VLAI?
Summary
An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the service. This issue could allow an authenticated remote attacker to run a specially crafted malicious server in an OpenShift cluster. The biggest impact is to availability.
Severity ?
6.5 (Medium)
CWE
Assigner
References
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CVE-2023-25725 (GCVE-0-2023-25725)
Vulnerability from cvelistv5 – Published: 2023-02-14 00:00 – Updated: 2025-03-20 19:14
VLAI?
Summary
HAProxy 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 HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.
Severity ?
9.1 (Critical)
CWE
- n/a
Assigner
References
| URL | Tags | |
|---|---|---|
|
|
||
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CVE-2022-0711 (GCVE-0-2022-0711)
Vulnerability from cvelistv5 – Published: 2022-03-02 21:59 – Updated: 2024-08-02 23:40
VLAI?
Summary
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2021-40346 (GCVE-0-2021-40346)
Vulnerability from cvelistv5 – Published: 2021-09-08 16:40 – Updated: 2024-08-04 02:27
VLAI?
Summary
An 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 configured http-request HAProxy ACLs and possibly other ACLs.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2021-39240 (GCVE-0-2021-39240)
Vulnerability from cvelistv5 – Published: 2021-08-17 18:33 – Updated: 2024-08-04 02:06
VLAI?
Summary
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 does not ensure that the scheme and path portions of a URI have the expected characters. For example, the authority field (as observed on a target HTTP/2 server) might differ from what the routing rules were intended to achieve.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-39241 (GCVE-0-2021-39241)
Vulnerability from cvelistv5 – Published: 2021-08-17 18:33 – Updated: 2024-08-04 02:06
VLAI?
Summary
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 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2021-39242 (GCVE-0-2021-39242)
Vulnerability from cvelistv5 – Published: 2021-08-17 18:33 – Updated: 2024-08-04 02:06
VLAI?
Summary
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 can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-11100 (GCVE-0-2020-11100)
Vulnerability from cvelistv5 – Published: 2020-04-02 14:23 – Updated: 2024-08-04 11:21
VLAI?
Summary
In 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 via a crafted HTTP/2 request, possibly causing remote code execution.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2019-19330 (GCVE-0-2019-19330)
Vulnerability from cvelistv5 – Published: 2019-11-27 15:53 – Updated: 2024-08-05 02:16
VLAI?
Summary
The 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, ASCII 0x0), aka Intermediary Encapsulation Attacks.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2019-18277 (GCVE-0-2019-18277)
Vulnerability from cvelistv5 – Published: 2019-10-23 13:07 – Updated: 2024-08-05 01:47
VLAI?
Summary
A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the "chunked" value were not being correctly rejected. The impact was limited but if combined with the "http-reuse always" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2019-14243 (GCVE-0-2019-14243)
Vulnerability from cvelistv5 – Published: 2019-07-23 21:38 – Updated: 2024-08-05 00:12
VLAI?
Summary
headerv2.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 denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-14241 (GCVE-0-2019-14241)
Vulnerability from cvelistv5 – Published: 2019-07-23 12:02 – Updated: 2024-08-05 00:12
VLAI?
Summary
HAProxy 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.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-11323 (GCVE-0-2019-11323)
Vulnerability from cvelistv5 – Published: 2019-05-09 13:42 – Updated: 2024-08-04 22:48
VLAI?
Summary
HAProxy before 1.9.7 mishandles a reload with rotated keys, which triggers use of uninitialized, and very predictable, HMAC keys. This is related to an include/types/ssl_sock.h error.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2018-20615 (GCVE-0-2018-20615)
Vulnerability from cvelistv5 – Published: 2019-03-18 16:11 – Updated: 2024-08-05 12:05
VLAI?
Summary
An 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. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2018-20102 (GCVE-0-2018-20102)
Vulnerability from cvelistv5 – Published: 2018-12-12 17:00 – Updated: 2024-08-05 11:51
VLAI?
Summary
An out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8.14. Due to a missing check when validating DNS responses, remote attackers might be able read the 16 bytes corresponding to an AAAA record from the non-initialized part of the buffer, possibly accessing anything that was left on the stack, or even past the end of the 8193-byte buffer, depending on the value of accepted_payload_size.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
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CVE-2018-20103 (GCVE-0-2018-20103)
Vulnerability from cvelistv5 – Published: 2018-12-12 17:00 – Updated: 2024-08-05 11:51
VLAI?
Summary
An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long chain of valid pointers resulting in stack exhaustion.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||
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CVE-2018-14645 (GCVE-0-2018-14645)
Vulnerability from cvelistv5 – Published: 2018-09-21 13:00 – Updated: 2024-08-05 09:38
VLAI?
Summary
A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.
Severity ?
7.5 (High)
CWE
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2018-11469 (GCVE-0-2018-11469)
Vulnerability from cvelistv5 – Published: 2018-05-25 14:00 – Updated: 2024-08-05 08:10
VLAI?
Summary
Incorrect 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 via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2018-10184 (GCVE-0-2018-10184)
Vulnerability from cvelistv5 – Published: 2018-05-09 07:00 – Updated: 2024-08-05 07:32
VLAI?
Summary
An issue was discovered in HAProxy before 1.8.8. The incoming H2 frame length was checked against the max_frame_size setting instead of being checked against the bufsize. The max_frame_size only applies to outgoing traffic and not to incoming, so if a large enough frame size is advertised in the SETTINGS frame, a wrapped frame will be defragmented into a temporary allocated buffer where the second fragment may overflow the heap by up to 16 kB. It is very unlikely that this can be exploited for code execution given that buffers are very short lived and their addresses not realistically predictable in production, but the likelihood of an immediate crash is absolutely certain.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2016-2102 (GCVE-0-2016-2102)
Vulnerability from cvelistv5 – Published: 2017-08-22 18:00 – Updated: 2024-08-05 23:17
VLAI?
Summary
HAProxy statistics in openstack-tripleo-image-elements are non-authenticated over the network.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2016-5360 (GCVE-0-2016-5360)
Vulnerability from cvelistv5 – Published: 2016-06-30 17:00 – Updated: 2024-08-06 01:00
VLAI?
Summary
HAproxy 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 unspecified other impact via unknown vectors.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2015-3281 (GCVE-0-2015-3281)
Vulnerability from cvelistv5 – Published: 2015-07-06 14:55 – Updated: 2024-08-06 05:39
VLAI?
Summary
The 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 attackers to obtain sensitive information (uninitialized memory contents of previous requests) via a crafted request.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
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CVE-2014-6269 (GCVE-0-2014-6269)
Vulnerability from cvelistv5 – Published: 2014-09-30 14:00 – Updated: 2024-08-06 12:10
VLAI?
Summary
Multiple 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) via a large stream of data, which triggers a buffer overflow and an out-of-bounds read.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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