VULNERABILITY INTELLIGENCE

CVE-2023-38039

CVSS score7.5 HIGH
EPSS probability56.37%
CISA KEVNot currently listed
Published2023-09-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers it would accept in a response, allowing a malicious server to stream an endless series of headers and eventually cause curl to run out of heap memory.

Weakness classification

  • nvd@nist.gov: CWE-770
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-770

Primary references