CVE-2022-32205
A malicious server can serve excessive amounts of headers in a HTTP response to curl and curl < 7.84.0 stores all of them.
Published Jul 7, 2022 · updated Oct 14, 2026 · n/a https://github.com/curl/curl
A malicious server can serve excessive amounts of headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead returns an error.This denial state might remain for as long as the same cookies are kept, match and haven't expired. Due to cookie matching rules, a server on can set cookies that also would match for , making it it possible for a "sister server" to effectively cause a denial of service for a sibling site on the same second level domain using this method.
Timeline
Detection, updates, and resolution for this record.
Jul 7, 2022 · NIST NVD
Detected
A malicious server can serve excessive amounts of headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead re
Oct 14, 2026 · NIST NVD
Updated
A malicious server can serve excessive amounts of headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead re
Affected
- cpe apple/macosversion unspecified
- cpe debian/debian linux11.0
- cpe fedoraproject/fedora35
- cpe haxx/curlversion unspecified
- cpe netapp/clustered data ontapversion unspecified
- cpe netapp/element softwareversion unspecified
- cpe netapp/h300s firmwareversion unspecified
- cpe netapp/h410s firmwareversion unspecified
- cpe netapp/h500s firmwareversion unspecified
- cpe netapp/h700s firmwareversion unspecified
- cpe netapp/hci management nodeversion unspecified
- cpe netapp/solidfireversion unspecified
- vendor n/a https://github.com/curl/curlversion unspecified
Sources
- CIRCL Vulnerability LookupCVE-2022-32205
A malicious server can serve excessive amounts of headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become
vulnerability.circl.lu - CVE.orgCVE-2022-32205
Official CVE identifier
cve.org - NIST NVDCVE-2022-32205
A malicious server can serve excessive amounts of headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create request
nvd.nist.gov