ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2022-42915

curl before 7.86.0 has a double free.

Published Oct 29, 2022 · catalog updated Oct 14, 2026 · curl before 7.86.0 has

Check if you run it

No confirmed exploitation is on record for CVE-2022-42915. EPSS is 2.93%. Act only if a listed version of curl before 7.86.0 has is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (curl before 7.86.0 has).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.93%
Remediation
Advisory link
Affected products
cpe apple/macos · cpe fedoraproject/fedora · cpe haxx/curl · cpe netapp/h300s firmware · cpe netapp/h410s firmware · cpe netapp/h500s firmware

curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apple/macosversion unspecified
  • cpe fedoraproject/fedora35
  • cpe fedoraproject/fedora36
  • cpe fedoraproject/fedora37
  • cpe haxx/curlversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h410s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified
  • cpe netapp/ontap 9version unspecified
  • cpe splunk/universal forwarderversion unspecified

How to fix CVE-2022-42915

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-42915. EPSS is 2.93%. Act only if a listed version of curl before 7.86.0 has is installed.

Which versions are affected?

Compare what you have installed with 35, 36, 37. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-415: Double Free. EPSS 2.93%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 29, 2022 · NIST NVD

    Detected

    curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and ins

  2. Oct 14, 2026 · NIST NVD

    Updated

    curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and ins

Sources

  • CVE.orgVulnerability recordCVE-2022-42915

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-42915

    30-day exploitation probability 2.9%

    first.org
  • NIST NVDVulnerability recordCVE-2022-42915

    curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refus

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.