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CriticalFix available

curl security update

Type: advisorySource: OSV1 source record

cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols. Security Fix(es): Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.(CVE-2026-11856) A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handles, can lead to use-after-free in the cleanup process.(CVE-2026-18924) A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.(CVE-2026-19931) When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and `CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on connections established without a presented server certificate. Bypassing the pinning check under these disabled-verification conditions allows unauthenticated connections to succeed when they should be rejected.(CVE-2026-80230) A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a give

Announced Source revision 1
Original source ↗

OESA-2026-4124

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:OESA-2026-4124

curl

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
7.71.1-54.oe2003sp4

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "7.71.1-54.oe2003sp4"
          }
        ]
      }
    ],
    "package": {
      "name": "curl",
      "purl": "pkg:rpm/openEuler/curl&distro=openEuler-20.03-LTS-SP4",
      "ecosystem": "openEuler:20.03-LTS-SP4"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4124.json"
    },
    "ecosystem_specific": {
      "src": [
        "curl-7.71.1-54.oe2003sp4.src.rpm"
      ],
      "noarch": [
        "curl-help-7.71.1-54.oe2003sp4.noarch.rpm"
      ],
      "x86_64": [
        "curl-7.71.1-54.oe2003sp4.x86_64.rpm",
        "curl-debuginfo-7.71.1-54.oe2003sp4.x86_64.rpm",
        "curl-debugsource-7.71.1-54.oe2003sp4.x86_64.rpm",
        "libcurl-7.71.1-54.oe2003sp4.x86_64.rpm",
        "libcurl-devel-7.71.1-54.oe2003sp4.x86_64.rpm"
      ],
      "aarch64": [
        "curl-7.71.1-54.oe2003sp4.aarch64.rpm",
        "curl-debuginfo-7.71.1-54.oe2003sp4.aarch64.rpm",
        "curl-debugsource-7.71.1-54.oe2003sp4.aarch64.rpm",
        "libcurl-7.71.1-54.oe2003sp4.aarch64.rpm",
        "libcurl-devel-7.71.1-54.oe2003sp4.aarch64.rpm"
      ]
    }
  }
]

Publisher severity

critical

Source reference: /database_specific/severity

Event
#14773 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement