CVE-2005-4077: Daniel Stenberg Curl

Medium severity, CVSS 4.6. EPSS: 0.5% chance of exploitation in the next 30 days.

Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a "?" separator in the hostname portion, which causes a "/" to be prepended to the resulting string.

Affected products

• Daniel Stenberg Curl: version 7.11.2 only; version 7.12 only; version 7.12.1 only; version 7.12.2 only; version 7.12.3 only; version 7.13 only; …

Published 2005-12-08. Last modified 2026-06-16.