MEDIUM

CVE-2022-27776

Q: What is CVE-2022-27776?

A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authentication or cookie header data on HTTP redirects to the same host but another port number.

Q: Is CVE-2022-27776 actively exploited?

Active exploitation of CVE-2022-27776 has not been confirmed. Its EPSS score was 4.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-27776?

CVE-2022-27776 has a CVSS v3 base score of 6.5 (MEDIUM severity).

CVSS v3

6.5

MEDIUM

EPSS Score

4.1 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

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

libcurlAlmaLinux:8all versions · fixed in 7.61.1-22.el8_6.3and 3 other packages

Vendor advisories

CVE-2022-27776 Red Hat Product Security119 products fixed · 16 known affected
curl: auth/cookie leak on redirect
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
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)
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
RHSA-2022:5245 Red Hat Product Security74 products fixed
Red Hat Security Advisory: curl security update
RHSA-2022:5313 Red Hat Product Security45 products fixed
Red Hat Security Advisory: curl security update

Full record on NVD

Description

A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authentication or cookie header data on HTTP redirects to the same host but another port number.

Technical details

Published: 2022-06-02

Frequently asked questions

What is CVE-2022-27776?

A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authentication or cookie header data on HTTP redirects to the same host but another port number.

Is CVE-2022-27776 actively exploited?

Active exploitation of CVE-2022-27776 has not been confirmed. Its EPSS score was 4.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-27776?

CVE-2022-27776 has a CVSS v3 base score of 6.5 (MEDIUM severity).

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