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Vulnerability record · CVE-2022-32205 · published 7 July 2022

CVE-2022-32205: Haxx curl allocation without limits vulnerability

Haxx · Curl

A malicious server can serve excessive amounts of `Set-Cookie:` 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 `foo.example.com` can set cookies that also would match for `bar.example.com`, 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.

4.3 CVSS 3.1 Medium EPSS 28% · top 2.0% CWE-770 · Allocation without limits
4.3CVSS 3.1 base score, v2 4.3
28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
19Affected product versions listed by NVD
18References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A malicious server can serve excessive amounts of `Set-Cookie:` 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 `foo.example.com` can set cookies that also would match for `bar.example.com`, 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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Affected products

19 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2022/Oct/28 Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2022/Oct/41 Mailing ListThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf PatchThird Party Advisory
https://hackerone.com/reports/1569946 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6BR4MTI3CEWK2YU2HQZU Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202212-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220915-0003/ Third Party Advisory
https://support.apple.com/kb/HT213488 Third Party Advisory
https://www.debian.org/security/2022/dsa-5197 Third Party Advisory
http://seclists.org/fulldisclosure/2022/Oct/28 Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2022/Oct/41 Mailing ListThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf PatchThird Party Advisory
https://hackerone.com/reports/1569946 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6BR4MTI3CEWK2YU2HQZU Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202212-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220915-0003/ Third Party Advisory
https://support.apple.com/kb/HT213488 Third Party Advisory
https://www.debian.org/security/2022/dsa-5197 Third Party Advisory

Track CVE-2022-32205 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-32205), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.