OESA-2026-1704

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1704
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-1704
Upstream
Published
2026-03-20T14:27:12Z
Modified
2026-03-20T14:30:58.879955Z
Summary
curl security update
Details

cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.

Security Fix(es):

libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request.

libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead.

When reusing a connection a range of criterion must first be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. One underlying reason being that Negotiate sometimes authenticates connections and not requests, contrary to how HTTP is designed to work.

An application that allows Negotiate authentication to a server (that responds wanting Negotiate) with user1:password1 and then does another operation to the same server also using Negotiate but with user2:password2 (while the previous connection is still alive) - the second request wrongly reused the same connection and since it then sees that the Negotiate negotiation is already made, it just sends the request over that connection thinking it uses the user2 credentials when it is in fact still using the connection authenticated for user1...

The set of authentication methods to use is set with CURLOPT_HTTPAUTH.

Applications can disable libcurl's reuse of connections and thus mitigate this problem, by using one of the following libcurl options to alter how connections are or are not reused: CURLOPT_FRESH_CONNECT, CURLOPT_MAXCONNECTS and CURLMOPT_MAX_HOST_CONNECTIONS (if using the curl_multi API).(CVE-2026-1965)

When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances.

If the hostname that the first request is redirected to has information in the used .netrc file, with either of the machine or default keywords, curl would pass on the bearer token set for the first host also to the second one.(CVE-2026-3783)

curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.(CVE-2026-3784)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:20.03-LTS-SP4
curl

Package

Name
curl
Purl
pkg:rpm/openEuler/curl&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.71.1-47.oe2003sp4

Ecosystem specific 

{
    "src": [
        "curl-7.71.1-47.oe2003sp4.src.rpm"
    ],
    "aarch64": [
        "curl-7.71.1-47.oe2003sp4.aarch64.rpm",
        "curl-debuginfo-7.71.1-47.oe2003sp4.aarch64.rpm",
        "curl-debugsource-7.71.1-47.oe2003sp4.aarch64.rpm",
        "libcurl-7.71.1-47.oe2003sp4.aarch64.rpm",
        "libcurl-devel-7.71.1-47.oe2003sp4.aarch64.rpm"
    ],
    "x86_64": [
        "curl-7.71.1-47.oe2003sp4.x86_64.rpm",
        "curl-debuginfo-7.71.1-47.oe2003sp4.x86_64.rpm",
        "curl-debugsource-7.71.1-47.oe2003sp4.x86_64.rpm",
        "libcurl-7.71.1-47.oe2003sp4.x86_64.rpm",
        "libcurl-devel-7.71.1-47.oe2003sp4.x86_64.rpm"
    ],
    "noarch": [
        "curl-help-7.71.1-47.oe2003sp4.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json"
openEuler:22.03-LTS-SP4
curl

Package

Name
curl
Purl
pkg:rpm/openEuler/curl&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.79.1-48.oe2203sp4

Ecosystem specific 

{
    "src": [
        "curl-7.79.1-48.oe2203sp4.src.rpm"
    ],
    "aarch64": [
        "curl-7.79.1-48.oe2203sp4.aarch64.rpm",
        "curl-debuginfo-7.79.1-48.oe2203sp4.aarch64.rpm",
        "curl-debugsource-7.79.1-48.oe2203sp4.aarch64.rpm",
        "libcurl-7.79.1-48.oe2203sp4.aarch64.rpm",
        "libcurl-devel-7.79.1-48.oe2203sp4.aarch64.rpm"
    ],
    "x86_64": [
        "curl-7.79.1-48.oe2203sp4.x86_64.rpm",
        "curl-debuginfo-7.79.1-48.oe2203sp4.x86_64.rpm",
        "curl-debugsource-7.79.1-48.oe2203sp4.x86_64.rpm",
        "libcurl-7.79.1-48.oe2203sp4.x86_64.rpm",
        "libcurl-devel-7.79.1-48.oe2203sp4.x86_64.rpm"
    ],
    "noarch": [
        "curl-help-7.79.1-48.oe2203sp4.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json"
openEuler:24.03-LTS
curl

Package

Name
curl
Purl
pkg:rpm/openEuler/curl&distro=openEuler-24.03-LTS

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.4.0-28.oe2403sp3

Ecosystem specific 

{
    "src": [
        "curl-8.4.0-28.oe2403.src.rpm",
        "curl-8.4.0-28.oe2403sp1.src.rpm",
        "curl-8.4.0-28.oe2403sp2.src.rpm",
        "curl-8.4.0-28.oe2403sp3.src.rpm"
    ],
    "aarch64": [
        "curl-8.4.0-28.oe2403.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403.aarch64.rpm",
        "curl-8.4.0-28.oe2403sp1.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp1.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp1.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403sp1.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp1.aarch64.rpm",
        "curl-8.4.0-28.oe2403sp2.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp2.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp2.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403sp2.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp2.aarch64.rpm",
        "curl-8.4.0-28.oe2403sp3.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp3.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp3.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403sp3.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp3.aarch64.rpm"
    ],
    "x86_64": [
        "curl-8.4.0-28.oe2403.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403.x86_64.rpm",
        "curl-8.4.0-28.oe2403sp1.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp1.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp1.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403sp1.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp1.x86_64.rpm",
        "curl-8.4.0-28.oe2403sp2.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp2.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp2.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403sp2.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp2.x86_64.rpm",
        "curl-8.4.0-28.oe2403sp3.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp3.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp3.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403sp3.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp3.x86_64.rpm"
    ],
    "noarch": [
        "curl-help-8.4.0-28.oe2403.noarch.rpm",
        "curl-help-8.4.0-28.oe2403sp1.noarch.rpm",
        "curl-help-8.4.0-28.oe2403sp2.noarch.rpm",
        "curl-help-8.4.0-28.oe2403sp3.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json"
openEuler:24.03-LTS-SP1
curl

Package

Name
curl
Purl
pkg:rpm/openEuler/curl&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.4.0-28.oe2403sp1

Ecosystem specific 

{
    "src": [
        "curl-8.4.0-28.oe2403sp1.src.rpm"
    ],
    "aarch64": [
        "curl-8.4.0-28.oe2403sp1.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp1.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp1.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403sp1.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp1.aarch64.rpm"
    ],
    "x86_64": [
        "curl-8.4.0-28.oe2403sp1.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp1.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp1.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403sp1.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp1.x86_64.rpm"
    ],
    "noarch": [
        "curl-help-8.4.0-28.oe2403sp1.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json"
openEuler:24.03-LTS-SP2
curl

Package

Name
curl
Purl
pkg:rpm/openEuler/curl&distro=openEuler-24.03-LTS-SP2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.4.0-28.oe2403sp2

Ecosystem specific 

{
    "src": [
        "curl-8.4.0-28.oe2403sp2.src.rpm"
    ],
    "aarch64": [
        "curl-8.4.0-28.oe2403sp2.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp2.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp2.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403sp2.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp2.aarch64.rpm"
    ],
    "x86_64": [
        "curl-8.4.0-28.oe2403sp2.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp2.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp2.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403sp2.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp2.x86_64.rpm"
    ],
    "noarch": [
        "curl-help-8.4.0-28.oe2403sp2.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json"
openEuler:24.03-LTS-SP3
curl

Package

Name
curl
Purl
pkg:rpm/openEuler/curl&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.4.0-28.oe2403sp3

Ecosystem specific 

{
    "src": [
        "curl-8.4.0-28.oe2403sp3.src.rpm"
    ],
    "aarch64": [
        "curl-8.4.0-28.oe2403sp3.aarch64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp3.aarch64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp3.aarch64.rpm",
        "libcurl-8.4.0-28.oe2403sp3.aarch64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp3.aarch64.rpm"
    ],
    "x86_64": [
        "curl-8.4.0-28.oe2403sp3.x86_64.rpm",
        "curl-debuginfo-8.4.0-28.oe2403sp3.x86_64.rpm",
        "curl-debugsource-8.4.0-28.oe2403sp3.x86_64.rpm",
        "libcurl-8.4.0-28.oe2403sp3.x86_64.rpm",
        "libcurl-devel-8.4.0-28.oe2403sp3.x86_64.rpm"
    ],
    "noarch": [
        "curl-help-8.4.0-28.oe2403sp3.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1704.json"