Public proof of conceptFix available

CVE-2022-22576

Q: Is CVE-2022-22576 actively exploited?

A proof-of-concept exploit exists for CVE-2022-22576, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2022-22576?

CVE-2022-22576 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

A public proof of concept exists; no exploitation attested.

Published2022-05-26
Fixed in9.0.6 · 8.2.12
WeaknessCWE-287 · CWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated with the same credentials as set for this transfer. This affects SASL-enabled protocols: SMPTP(S), IMAP(S), POP3(S) and LDAP(S) (openldap only).

Timeline

dates in UTC

2022-05-2617:15CVE publishedNVD

Versions per branch

NVD

Splunk universal forwarder

Branch	Affected	Fixed in	Source
9.0	≥ 9.0.0, < 9.0.6	9.0.6	NVD
8.2	≥ 8.2.0, < 8.2.12	8.2.12	NVD
9.1	= 9.1.0	no fix published	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
10.0	= 10.0	no fix published	NVD
11.0	= 11.0	no fix published	NVD

Broadcom fabric operating system

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

9 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As hackerone, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

https://github.com/curl/curl
Affected
- = Fixed in curl 7.83.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of Use CVE recordupdated 2022-12-19

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

curlUbuntu:Pro:16.04:LTSall versions · no fixed version listed
curlUbuntu:Pro:14.04:LTSall versions · no fixed version listed
curlUbuntu:22.04:LTSall versions · fixed in 7.81.0-1ubuntu1.1
curlUbuntu:20.04:LTSall versions · fixed in 7.68.0-1ubuntu2.10
curlUbuntu:18.04:LTSall versions · fixed in 7.58.0-2ubuntu3.17
curlSUSE:Linux Enterprise Software Development Kit 12 SP5all versions · fixed in 7.60.0-11.37.1
curlSUSE:Linux Enterprise Server for SAP Applications 12 SP5all versions · fixed in 7.60.0-11.37.1
curlSUSE:Linux Enterprise Server 12 SP5all versions · fixed in 7.60.0-11.37.1

37 more package ranges on OSV.dev

Vendor advisories

CVE-2022-22576 Red Hat Product Security119 products fixed · 8 known affected
curl: OAUTH2 bearer bypass in connection re-use
rh-dotnet31-curl as a component of .NET Core 3.1 on Red Hat Enterprise Linux · rh-dotnet31-curl.src as a component of .NET Core 3.1 on Red Hat Enterprise Linux · rh-dotnet31-libcurl as a component of .NET Core 3.1 on Red Hat Enterprise Linux · +5 more
ICSA-23-348-10 CISA5 known affected
Siemens SIMATIC S7-1500
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) · +2 more
SSA-398330 Siemens ProductCERT5 known affected
SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.0 < V3.1.5 · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.0 < V3.1.5 · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.0 < V3.1.5 · +2 more
ICSA-23-194-01 CISA11 known affected
Siemens RUGGEDCOM ROX
RUGGEDCOM ROX MX5000 · RUGGEDCOM ROX MX5000RE · RUGGEDCOM ROX RX1400 · +8 more
SSA-146325 Siemens ProductCERT11 known affected
SSA-146325: Multiple Vulnerabilities in RUGGEDCOM ROX before V2.16
RUGGEDCOM ROX MX5000 · RUGGEDCOM ROX MX5000RE · RUGGEDCOM ROX RX1400 · +8 more
RHSA-2022:5245 Red Hat Product Security74 products fixed
Red Hat Security Advisory: curl security update

1 more advisory

Full record on NVD

Fix

Update Splunk universal forwarder to 9.0.6 · 8.2.12
Vendor fix Siemens ProductCERT SSA-398330 · 1 productUpdate to V3.1.5 or later version
Vendor fix CISA ICSA-23-348-10 · 5 productsUpdate to V3.1.5 or later version
Vendor fix Siemens ProductCERT SSA-146325 · 11 productsUpdate to V2.16.0 or later version
Vendor fix CISA ICSA-23-194-01 · 11 productsUpdate to V2.16.0 or later version
Vendor fix Red Hat Product Security RHSA-2022:5245 · 74 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Mitigation from the vendor CISA ICSA-23-348-10 · 5 productsOnly build and run applications from trusted sources.

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof of concept: CISA-ADP (SSVC)PoC stated2026-04-16
PoC-in-GitHubno public repository identifiedread 2026-11-08
Metasploit modules: none listed

Sources

CISA-ADPSSVC decisionpoc2026-04-16
CISA-ADPCVSS 3.18.12025-05-20
NVDCVSS 3.18.1read 2026-10-23
NVDCVSS 2.05.5read 2026-10-23
CNAweakness (CWE)CWE-287known since 2026-10-23
NVDweakness (CWE)CWE-306read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-11-08
OSVaffected packages—
GitHub Advisoriesadvisory—

Identifiers

EUVD-2022-27722same flawENISA EUVD · LicenseRef-ENISA-legal-notice
GHSA-2r69-696x-qxj9same flawGitHub Advisory Database · CC-BY-4.0
JLSEC-2026-385same flawJulia Security Advisories · CC-BY-4.0
ALSA-2022:5313advisory covering several CVEsAlmaLinux · MIT
DLA-3085-1advisory covering several CVEsDebian · LicenseRef-unstated
DSA-5197-1advisory covering several CVEsDebian · LicenseRef-unstated
MGASA-2022-0159advisory covering several CVEsMageia · LicenseRef-unstated
OESA-2022-1659advisory covering several CVEsopenEuler · LicenseRef-unstated
openSUSE-SU-2024:12028-1advisory covering several CVEsopenSUSE · LicenseRef-unstated
RHSA-2022:5245advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2022:5313advisory covering several CVEsRed Hat · CC-BY-4.0
RLSA-2022:5313advisory covering several CVEsRocky Linux · BSD-3-Clause
SUSE-SU-2022:1657-1advisory covering several CVEsSUSE · LicenseRef-unstated
SUSE-SU-2022:1680-1advisory covering several CVEsSUSE · LicenseRef-unstated
USN-5397-1advisory covering several CVEsUbuntu

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published: 2022-05-26
Last Modified: 2026-10-14
NVD status: Modified
GitHub Advisory: GHSA-2r69-696x-qxj9

Frequently asked questions

What is CVE-2022-22576?

Is CVE-2022-22576 actively exploited?

A proof-of-concept exploit exists for CVE-2022-22576, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2022-22576?

CVE-2022-22576 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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