CVE-2022-32205 [Medium] | Denial of Service in 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.

EDB-ID	Source	Kind	Published	Link
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Kind

Published

Link

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nvd_ref

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Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-13	2.59%	2.19%	-0.40%
2	2026-03-04	3.76%	2.59%	-1.17%
3	2026-03-01	—	3.76%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-13

2.59%

2.19%

-0.40%

2026-03-04

3.76%

2.59%

-1.17%

2026-03-01

—

3.76%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L` 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:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	2.8	1.4	[email protected]
4.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L` 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:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	2.8	1.4	134c704f-9b21-4f2e-91b3-4a467353bcc0
4.3	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:N/I:N/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	8.6	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

4.3

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L 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:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

2.8

1.4

[email protected]

4.3

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L 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:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

2.8

1.4

134c704f-9b21-4f2e-91b3-4a467353bcc0

4.3

2.0

MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

2.9

[email protected]

OS Trackers for CVE-2022-32205

vendor	priority	summary	link
`alpine`	—	CVE-2022-32205: 1 source package rows (curl); 152 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 145.	https://security.alpinelinux.org/vuln/CVE-2022-32205
`debian`	not yet assigned	CVE-2022-32205 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-2022-32205
`gentoo`	high	CVE-2022-32205: 1 GLSA(s) (202212-01), 1 atom(s) (net-misc/curl); latest impact high.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-32205
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2022-32205
`suse`	medium	CVE-2022-32205 severity moderate: SUSE including 362 source package names (0.58.0.1.147:libcurl4-7.79.1-150400.5.3.1, 0.58.0.17.143:curl-7.79.1-150400.5.3.1, …), 840 product×package rows across 266 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (266 product lines)): Fixed 619, Known Affected 111, Known Not Affected 110.	https://www.suse.com/security/cve/CVE-2022-32205/
`ubuntu`	medium	CVE-2022-32205 medium priority: Ubuntu including 1 source packages (curl), 8 status rows across 8 suites (bionic, focal, impish, jammy, kinetic, trusty, upstream, xenial): not-affected 4, released 4.	https://ubuntu.com/security/CVE-2022-32205

Affected software / configurations for CVE-2022-32205

Vendor	Product	Version	Raw CPE
haxx	curl	>= 7.71.0, < 7.84.0	cpe:2.3:a:haxx:curl::::::::
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*
debian	debian_linux	11.0	cpe:2.3:o:debian:debian_linux:11.0:::::::*
netapp	clustered_data_ontap	—	cpe:2.3:a:netapp:clustered_data_ontap:-:::::::*
netapp	element_software	—	cpe:2.3:a:netapp:element_software:-:::::::*
netapp	hci_management_node	—	cpe:2.3:a:netapp:hci_management_node:-:::::::*
netapp	solidfire	—	cpe:2.3:a:netapp:solidfire:-:::::::*
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:-:::::::*
apple	macos	< 13.0	cpe:2.3:o:apple:macos::::::::
siemens	scalance_sc622-2c_firmware	< 3.0	cpe:2.3:o:siemens:scalance_sc622-2c_firmware::::::::
siemens	scalance_sc626-2c_firmware	< 3.0	cpe:2.3:o:siemens:scalance_sc626-2c_firmware::::::::
siemens	scalance_sc632-2c_firmware	< 3.0	cpe:2.3:o:siemens:scalance_sc632-2c_firmware::::::::
siemens	scalance_sc636-2c_firmware	< 3.0	cpe:2.3:o:siemens:scalance_sc636-2c_firmware::::::::
siemens	scalance_sc642-2c_firmware	< 3.0	cpe:2.3:o:siemens:scalance_sc642-2c_firmware::::::::
siemens	scalance_sc646-2c_firmware	< 3.0	cpe:2.3:o:siemens:scalance_sc646-2c_firmware::::::::
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-2022-32205

URL	Tags
http://seclists.org/fulldisclosure/2022/Oct/28	Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2022/Oct/41	Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf	Patch Third Party Advisory
https://hackerone.com/reports/1569946	Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6BR4MTI3CEWK2YU2HQZUW5FAS3FEY/	Mailing List Third 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

URL

CVE-2022-32205

Public exploit references (Exploit-DB) for CVE-2022-32205

Exploit prediction scoring system (EPSS) score for CVE-2022-32205

Common vulnerability scoring system (CVSS) metrics for CVE-2022-32205

Weakness enumeration for CVE-2022-32205

OS Trackers for CVE-2022-32205

Affected software / configurations for CVE-2022-32205

References for CVE-2022-32205