All vulnerabilities

Servers and applications

CVE-2023-38039

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.

Severity
High 7.5
Published
15 Sept 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.3.0
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:curl
  • From 7.84.0 before 8.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-38039
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-38039