Haxx Curl vulnerabilities

CVE-2022-27780 [HIGH] CWE-177 CVE-2022-27780: The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host na The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flaw

CVE-2007-3564 [HIGH] CVE-2007-3564: libcurl 7 libcurl 7.14.0 through 7.16.3, when built with GnuTLS support, does not check SSL/TLS certificate expiration or activation dates, which allows remote attackers to bypass certain access restrictions.

CVE-2016-9953 [CRITICAL] CWE-125 CVE-2016-9953: The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, allows remote attackers to obtain sensitive information, cause a denial of service (crash), or possibly have unspecified other impact via a wildcard certificate name, which triggers an out-of-bounds read.

CVE-2005-3185 [HIGH] CVE-2005-3185: Stack-based buffer overflow in the ntlm_output function in http-ntlm Stack-based buffer overflow in the ntlm_output function in http-ntlm.c for (1) wget 1.10, (2) curl 7.13.2, and (3) libcurl 7.13.2, and other products that use libcurl, when NTLM authentication is enabled, allows remote servers to execute arbitrary code via a long NTLM username.

CVE-2006-1061 [HIGH] CVE-2006-1061: Heap-based buffer overflow in cURL and libcURL 7 Heap-based buffer overflow in cURL and libcURL 7.15.0 through 7.15.2 allows remote attackers to execute arbitrary commands via a TFTP URL (tftp://) with a valid hostname and a long path.

CVE-2019-3823 [HIGH] CVE-2019-3823: libcurl versions from 7 libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.

CVE-2016-9594 [HIGH] CWE-665 CVE-2016-9594: curl before version 7.52.1 is vulnerable to an uninitialized random in libcurl's internal function t curl before version 7.52.1 is vulnerable to an uninitialized random in libcurl's internal function that returns a good 32bit random value. Having a weak or virtually non-existent random value makes the operations that use it vulnerable.

CVE-2016-8623 [HIGH] CWE-416 CVE-2016-8623: A flaw was found in curl before version 7.51.0. The way curl handles cookies permits other threads t A flaw was found in curl before version 7.51.0. The way curl handles cookies permits other threads to trigger a use-after-free leading to information disclosure.

CVE-2022-27781 [HIGH] CWE-400 CVE-2022-27781: libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returne libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.

CVE-2026-6276 [HIGH] CWE-319 CVE-2026-6276: Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.

CVE-2026-9080 [HIGH] CWE-416 CVE-2026-9080: Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.

CVE-2024-9681 [MEDIUM] CWE-697 CVE-2024-9681: When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's ca When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than otherwise intended. This affects curl using applications that enable HSTS and use URLs with the insecure `HTTP://` scheme and perform transfers with hosts like `x.example.com` as well as `example.com` where

CVE-2016-9952 [HIGH] CWE-295 CVE-2016-9952: The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."

CVE-2020-8177 [HIGH] CWE-99 CVE-2020-8177: curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resour curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead too overwriting a local file when the -J flag is used.

CVE-2017-7468 [HIGH] CVE-2017-7468: In curl and libcurl 7 In curl and libcurl 7.52.0 to and including 7.53.1, libcurl would attempt to resume a TLS session even if the client certificate had changed. That is unacceptable since a server by specification is allowed to skip the client certificate check on resume, and may instead use the old identity which was established by the previous certificate (or no certificate). libcurl supports by default the use of TLS session id/ticket to resume previous

CVE-2026-8458 [MEDIUM] CVE-2026-8458: libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authentica libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a log

CVE-2022-32208 [MEDIUM] CWE-840 CVE-2022-32208: When curl < 7.84.0 does FTP transfers secured by krb5, it handles message verification failures wron When curl < 7.84.0 does FTP transfers secured by krb5, it handles message verification failures wrongly. This flaw makes it possible for a Man-In-The-Middle attack to go unnoticed and even allows it to inject data to the client.

CVE-2023-46218 [MEDIUM] CWE-178 CVE-2023-46218: This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl's function that verifies a giv

CVE-2015-3143 [MEDIUM] CVE-2015-3143: cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remot cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remote attackers to connect as other users via an unauthenticated request, a similar issue to CVE-2014-0015.

CVE-2022-27776 [MEDIUM] CWE-522 CVE-2022-27776: A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authenticati A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authentication or cookie header data on HTTP redirects to the same host but another port number.