CVE-2022-32221

Exp

When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously was used to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the subsequent `POST` request. The problem exists in the logic for a reused handle when it is changed from a PUT to a POST.

Published: 2022-12-05 Last update: 2026-02-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-32221 is rated High Exploit Risk (83.5/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.85%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-32221

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-32221

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-31 1.76% 1.85% +0.09%
2 2026-05-14 1.36% 1.76% +0.40%
3 2026-05-13 — 1.36% —

Full EPSS history (53 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-32221

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2022-32221

OS Trackers for CVE-2022-32221

vendor priority summary link
alpine — CVE-2022-32221: 1 source package rows (curl); 162 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 155. https://security.alpinelinux.org/vuln/CVE-2022-32221
debian not yet assigned CVE-2022-32221 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-32221
gentoo high CVE-2022-32221: 1 GLSA(s) (202212-01), 1 atom(s) (net-misc/curl); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-32221
redhat medium — https://access.redhat.com/security/cve/CVE-2022-32221
suse high CVE-2022-32221 severity important: SUSE including 434 source package names (0.23.0.3.2.368:libcurl4-7.66.0-150200.4.42.1, 0.58.0.1.147:libcurl4-7.79.1-150400.5.9.1, …), 1025 product×package rows across 339 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (339 product lines)): Fixed 909, Known Affected 110, Known Not Affected 6. https://www.suse.com/security/cve/CVE-2022-32221/
ubuntu medium CVE-2022-32221 medium priority: Ubuntu including 1 source packages (curl), 7 status rows across 7 suites (bionic, focal, jammy, kinetic, trusty, upstream, xenial): released 6, needs-triage 1. https://ubuntu.com/security/CVE-2022-32221

Affected software / configurations for CVE-2022-32221

Vendor Product Version Raw CPE
haxx curl < 7.86.0 cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
netapp clustered_data_ontap — cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
netapp h300s_firmware — cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
netapp h500s_firmware — cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
netapp h700s_firmware — cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
netapp h410s_firmware — cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
apple macos < 12.6.3 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
splunk universal_forwarder >= 8.2.0, < 8.2.12 cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
splunk universal_forwarder >= 9.0.0, < 9.0.6 cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
splunk universal_forwarder 9.1.0 cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*

References for CVE-2022-32221

URL Tags
http://seclists.org/fulldisclosure/2023/Jan/19 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2023/Jan/20 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/05/17/4 Mailing List
https://hackerone.com/reports/1704017 Exploit Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00028.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202212-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20230110-0006/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20230208-0002/ Third Party Advisory
https://support.apple.com/kb/HT213604 Third Party Advisory
https://support.apple.com/kb/HT213605 Third Party Advisory
https://www.debian.org/security/2023/dsa-5330 Third Party Advisory
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