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CVSS: 9.0EPSS: 0%CPEs: 15EXPL: 1

21 Mar 2023 — A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the first element to indicate a path relative to the user's home directory. Attackers can exploit this flaw to bypass filtering or execute arbitrary code by crafting a path like /~2/foo while accessing a server with a specific user. Harry Sintonen discovered that curl incorrectly handled certain TELN... • https://hackerone.com/reports/1892351 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVSS: 10.0EPSS: 0%CPEs: 15EXPL: 1

21 Mar 2023 — A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system. Harry Sintonen discov... • https://hackerone.com/reports/1891474 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-75: Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) •

CVSS: 7.8EPSS: 0%CPEs: 16EXPL: 1

23 Feb 2023 — An allocation of resources without limits or throttling vulnerability exists in curl

CVSS: 5.9EPSS: 0%CPEs: 5EXPL: 1

06 Jan 2023 — A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path. A vulnerability was found in curl. • http://seclists.org/fulldisclosure/2023/Mar/17 • CWE-416: Use After Free •

CVSS: 10.0EPSS: 0%CPEs: 16EXPL: 1

27 Oct 2022 — When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously was used to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the subsequent `POST` request. The problem exists in the logic for a reused handle when it is chang... • http://seclists.org/fulldisclosure/2023/Jan/19 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-440: Expected Behavior Violation CWE-668: Exposure of Resource to Wrong Sphere •

CVSS: 3.7EPSS: 0%CPEs: 21EXPL: 1

02 Sep 2022 — When curl is used to retrieve and parse cookies from a HTTP(S) server, itaccepts cookies using control codes that when later are sent back to a HTTPserver might make the server return 400 responses. Effectively allowing a"sister site" to deny service to all siblings. Cuando curl es usado para recuperar y analizar las cookies de un servidor HTTP(S), acepta las cookies usando códigos de control que cuando son enviados de vuelta a un servidor HTTP podrían hacer que el servidor devolviera respuestas 400. En efe... • http://seclists.org/fulldisclosure/2023/Jan/20 • CWE-20: Improper Input Validation CWE-1286: Improper Validation of Syntactic Correctness of Input •

CVSS: 6.5EPSS: 0%CPEs: 33EXPL: 2

28 Jun 2022 — curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memo... • https://github.com/HimanshuS67/external_curl_AOSP10_CVE-2022-32206 • CWE-770: Allocation of Resources Without Limits or Throttling •

CVSS: 5.9EPSS: 0%CPEs: 22EXPL: 1

28 Jun 2022 — 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. Cuando curl versiones anteriores a 7.84.0, hace transferencias FTP aseguradas por krb5, maneja inapropiadamente los fallos de verificación de mensajes. Este fallo hace posible que un ataque de tipo Man-In-The-Middle pase desapercibido e incluso permite inyectar datos al cliente A vu... • http://seclists.org/fulldisclosure/2022/Oct/28 • CWE-787: Out-of-bounds Write CWE-840: Business Logic Errors CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel •

CVSS: 5.7EPSS: 0%CPEs: 20EXPL: 1

01 Jun 2022 — An insufficiently protected credentials vulnerability exists in curl 4.9 to and include curl 7.82.0 are affected that could allow an attacker to extract credentials when follows HTTP(S) redirects is used with authentication could leak credentials to other services that exist on different protocols or port numbers. Una vulnerabilidad de credenciales insuficientemente protegidas se presenta en curl versión 4.9 a e incluyen curl versión 7.82.0 están afectados que podría permitir a un atacante para extraer cred... • https://hackerone.com/reports/1543773 • CWE-522: Insufficiently Protected Credentials •

CVSS: 6.5EPSS: 0%CPEs: 22EXPL: 1

01 Jun 2022 — 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. Una vulnerabilidad de credenciales insuficientemente protegidas fijada en curl versión 7.83.0, podría filtrar datos de autenticación o de encabezados de cookies en redireccionamientos HTTP al mismo host pero con otro número de puerto A vulnerability was found in curl. This security flaw allows leak authentication or cookie he... • https://hackerone.com/reports/1547048 • CWE-522: Insufficiently Protected Credentials •