CVE-2022-32205 — A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to...
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.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 27.9% (30-day exploitation probability)+15
- Technical severity (medium)+3
- CISA SSVC: exploitation "poc"+5
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented patch — cert-portal.siemens.com (NIST National Vulnerability Database)
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Apple Macos, Debian Debian Linux, Fedoraproject Fedora…).
- The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
- Apply the fixed version or the patch documented under Remediation.
- Exploitation requires user interaction: tighten email/web filtering and warn affected users.
- EPSS ahead of 98% of scored CVEs: prioritize it in the patch queue.
- Search available logs for exploit probes matching the vulnerability class (denial of service), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Apple | Macos | < 13.0 | Vulnerable | NIST National Vulnerability Database |
| Debian | Debian Linux | version 11.0 | Vulnerable | NIST National Vulnerability Database |
| Fedoraproject | Fedora | version 35 | Vulnerable | NIST National Vulnerability Database |
| Haxx | Curl | ≥ 7.71.0 and < 7.84.0 | Vulnerable | NIST National Vulnerability Database |
| Netapp | Clustered Data Ontap | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Element Software | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H300s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H410s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H500s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H700s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Hci Management Node | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Solidfire | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc622-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc626-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc632-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc636-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc642-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc646-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Splunk | Universal Forwarder | version 9.1.0≥ 9.0.0 and < 9.0.6≥ 8.2.0 and < 8.2.12 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 4.3 | CVSS 3.1 | Medium | 2.8 | 1.4 | nvd@nist.gov via NIST National Vulnerability Database |
| 4.3 | CVSS 3.1 | Medium | 2.8 | 1.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database |
| 4.3 | CVSS 3.1 | Medium | — | — | GitHub, Inc. via GitHub Security Advisories |
| 4.3 | CVSS 3.1 | Medium | — | — | CISA-ADP via CVE Program (cve.org) e CISA ADP |
| 4.3 | CVSS 2.0 | Medium | 8.6 | 2.9 | nvd@nist.gov via NIST National Vulnerability Database |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L (score shown at the top: nvd@nist.gov) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
CWE-770 · Allocation of Resources Without Limits or Throttling
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
- Track CPU/memory spikes and availability drops correlated with request patterns.
Timeline
What happened to this CVE, newest first.
- 2026
- SSVC assessment updated
- Record published
- Fix documented
- Affected products added · haxx/curl, fedoraproject/fedora, debian/debian linux, netapp/clustered data ontap, netapp/element software, netapp/hci m
- CVSS changed · 4.3
- Source status changed · → Modified
- Record created in this database
- 2022
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 2× References added · Oct 14, 2026 – Oct 14, 2026
- 1× Official description updated · Oct 14, 2026 – Oct 14, 2026
References
19 on the record
- cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6
- security.netapp.com/advisory/ntap-20220915-0003
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BEV6BR
- www.debian.org/security/2022/dsa-5197
- security.netapp.com/advisory/ntap-20220915-0003/
- nvd.nist.gov/vuln/detail/CVE-2022-32205
- seclists.org/fulldisclosure/2022/Oct/28
- seclists.org/fulldisclosure/2022/Oct/41
- hackerone.com/reports/1569946
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6
- cert-portal.siemens.com/productcert/html/ssa-419740.html
- cert-portal.siemens.com/productcert/html/ssa-942865.html
- cert-portal.siemens.com/productcert/html/ssa-558014.html
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- security.gentoo.org/glsa/202212-01
- cert-portal.siemens.com/productcert/html/ssa-333517.html
- support.apple.com/kb/HT213488
- github.com/advisories/GHSA-9hhr-r3j8-h675
Elsewhere on this site
Related CVEs (same products)
- High CVE-2026-86950 Apple Multiple Products Out-of-Bounds Write Vulnerability KEV 16d
- Critical CVE-2026-65400 Apple macOS Improper Authentication Vulnerability KEV Aug 6, 2026
- High CVE-2026-12996 A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote... Jul 30, 2026
- High CVE-2026-43731 Use After Free in Apple Safari Jun 29, 2026
- Medium CVE-2026-43734 Use After Free in Apple Safari Jun 29, 2026
- Medium CVE-2026-43732 Path Traversal in Apple Safari Jun 29, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2022-32205 is "A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to...", rated Medium. It affects Macos (Apple); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.3 describes technical severity. EPSS 27.90% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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