
CVE-2025-0725 – gzip integer overflow
https://notcve.org/view.php?id=CVE-2025-0725
05 Feb 2025 — When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow. When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overfl... • https://curl.se/docs/CVE-2025-0725.html •

CVE-2025-0167 – netrc and default credential leak
https://notcve.org/view.php?id=CVE-2025-0167
05 Feb 2025 — When asked to use a `.netrc` file for credentials **and** to follow HTTP redirects, curl could leak the password used for the first host to the followed-to host under certain circumstances. This flaw only manifests itself if the netrc file has a `default` entry that omits both login and password. A rare circumstance. When asked to use a `.netrc` file for credentials **and** to follow HTTP redirects, curl could leak the password used for the first host to the followed-to host under certain circumstances. Thi... • https://curl.se/docs/CVE-2025-0167.html •

CVE-2024-11053 – netrc and redirect credential leak
https://notcve.org/view.php?id=CVE-2024-11053
11 Dec 2024 — When asked to both use a `.netrc` file for credentials and to follow HTTP redirects, curl could leak the password used for the first host to the followed-to host under certain circumstances. This flaw only manifests itself if the netrc file has an entry that matches the redirect target hostname but the entry either omits just the password or omits both login and password. A flaw was found in curl. A logic error when processing credentials from the .netrc file while performing redirects allows the transfer o... • https://curl.se/docs/CVE-2024-11053.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2024-9681 – HSTS subdomain overwrites parent cache entry
https://notcve.org/view.php?id=CVE-2024-9681
06 Nov 2024 — 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 the first host is a subdomain of the second host. (The HSTS cache either needs to have been populated manually or there needs to have been previous HTTPS acces... • https://curl.se/docs/CVE-2024-9681.html •

CVE-2024-8096 – OCSP stapling bypass with GnuTLS
https://notcve.org/view.php?id=CVE-2024-8096
11 Sep 2024 — When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than 'revoked' (like for example 'unauthorized') it is not treated as a bad certficate. Hiroki Kurosawa discovered that curl incorrectly handled certain OCSP responses. This could result in bad certificates not being c... • https://curl.se/docs/CVE-2024-8096.json • CWE-295: Improper Certificate Validation •

CVE-2024-7264 – ASN.1 date parser overread
https://notcve.org/view.php?id=CVE-2024-7264
31 Jul 2024 — libcurl's ASN1 parser code has the `GTime2str()` function, used for parsing an ASN.1 Generalized Time field. If given an syntactically incorrect field, the parser might end up using -1 for the length of the *time fraction*, leading to a `strlen()` getting performed on a pointer to a heap buffer area that is not (purposely) null terminated. This flaw most likely leads to a crash, but can also lead to heap contents getting returned to the application when [CURLINFO_CERTINFO](https://curl.se/libcurl/c/CURLINFO... • https://curl.se/docs/CVE-2024-7264.html • CWE-125: Out-of-bounds Read •

CVE-2024-2398 – HTTP/2 push headers memory-leak
https://notcve.org/view.php?id=CVE-2024-2398
27 Mar 2024 — When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting, libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory. Further, this error condition fails silently and is therefore not easily detected by an application. Cuando una aplicación le dice a libcurl que quiere permitir la inserción del servidor HTTP/2 y la... • http://www.openwall.com/lists/oss-security/2024/03/27/3 • CWE-772: Missing Release of Resource after Effective Lifetime •

CVE-2023-46218 – curl: information disclosure by exploiting a mixed case flaw
https://notcve.org/view.php?id=CVE-2023-46218
07 Dec 2023 — 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 given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`,... • https://curl.se/docs/CVE-2023-46218.html • CWE-201: Insertion of Sensitive Information Into Sent Data •

CVE-2020-19909
https://notcve.org/view.php?id=CVE-2020-19909
22 Aug 2023 — Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) ... • https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves • CWE-190: Integer Overflow or Wraparound •

CVE-2023-28319 – curl: use after free in SSH sha256 fingerprint check
https://notcve.org/view.php?id=CVE-2023-28319
26 May 2023 — A use after free vulnerability exists in curl