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    CVE-2012-0036

    curl and libcurl 7.2x before 7.24.0 do not properly consider special characters during extraction of a pathname from a URL, which allows remote attackers to conduct data-injection attacks via a crafted URL, as demonstrated by a CRLF injection attack on the (1) IMAP, (2) POP3, or (3) SMTP protocol.

    Published:Jan 24, 2012
    Last Modified:Apr 11, 2025
    EPS:Apr 13, 2012
    EPSS Score:0.08594
    CVSS Score:7.5

    Affected Products

    Vendor
    Curl
    Product
    Curl
    Vendor
    Curl
    Product
    Libcurl

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-82209 (CVSS 8.2) — When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing…
    CVE-2026-82208 (CVSS 7.5) — With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the t…
    CVE-2026-80255 (CVSS 7.5) — A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately b…
    CVE-2026-80231 (CVSS 7.5) — A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given hostname even when usi…
    CVE-2026-80230 (CVSS 7.5) — When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable standard peer verification (`CURLO…
    CVE-2026-80229 (CVSS 7.5) — When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating …
    CVE-2026-19931 (CVSS 9.8) — A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authent…
    CVE-2026-18924 (CVSS 9.1) — A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections…
    CVE-2026-13608 (CVSS 7.4) — A flaw in the libcurl SASL negotiation for LDAP authentication allows an incomplete handshake sequence to be m…
    CVE-2026-9547 (CVSS 7.4) — When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KE…

    References

    http://curl.haxx.se/curl-url-sanitize.patch
    http://curl.haxx.se/docs/adv_20120124.html
    http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
    http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
    http://secunia.com/advisories/48256
    http://security.gentoo.org/glsa/glsa-201203-02.xml
    http://support.apple.com/kb/HT5281
    http://www.debian.org/security/2012/dsa-2398
    http://www.mandriva.com/security/advisories?name=MDVSA-2012:058
    http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
    http://www.securityfocus.com/bid/51665
    http://www.securitytracker.com/id/1032924
    https://bugzilla.redhat.com/show_bug.cgi?id=773457
    https://github.com/bagder/curl/commit/75ca568fa1c19de4c5358fed246686de8467c238
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03760en_us
    http://curl.haxx.se/curl-url-sanitize.patch
    http://curl.haxx.se/docs/adv_20120124.html
    http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
    http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
    http://secunia.com/advisories/48256
    http://security.gentoo.org/glsa/glsa-201203-02.xml
    http://support.apple.com/kb/HT5281
    http://www.debian.org/security/2012/dsa-2398
    http://www.mandriva.com/security/advisories?name=MDVSA-2012:058
    http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
    http://www.securityfocus.com/bid/51665
    http://www.securitytracker.com/id/1032924
    https://bugzilla.redhat.com/show_bug.cgi?id=773457
    https://github.com/bagder/curl/commit/75ca568fa1c19de4c5358fed246686de8467c238
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03760en_us

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High