ALSA-2026:80512 (CVE-2026-10536)

Vulnerability from osv_almalinux – Published: 2026-10-12 00:00 – Updated: 2026-10-13 09:21 – Source website
VLAI
Summary
Moderate: curl security update
Details

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

Security Fix(es):

  • curl: curl: Proxy credential disclosure via redirects to unauthenticated proxies (CVE-2026-6253)
  • curl: libcurl: Authentication bypass due to incorrect HTTP Negotiate connection reuse (CVE-2026-5545)
  • curl: libcurl: Credential leak via reused proxy connection during HTTP redirects (CVE-2026-6429)
  • curl: libcurl: Information disclosure via incorrect Proxy-Authorization header reuse (CVE-2026-7168)
  • libcurl: libcurl: Use-after-free vulnerability leading to Denial of Service (CVE-2026-10536)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "curl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.12.1-4.el10_2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libcurl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.12.1-4.el10_2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libcurl-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.12.1-4.el10_2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libcurl-minimal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.12.1-4.el10_2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.  \n\nSecurity Fix(es):  \n\n  * curl: curl: Proxy credential disclosure via redirects to unauthenticated proxies (CVE-2026-6253)\n  * curl: libcurl: Authentication bypass due to incorrect HTTP Negotiate connection reuse (CVE-2026-5545)\n  * curl: libcurl: Credential leak via reused proxy connection during HTTP redirects (CVE-2026-6429)\n  * curl: libcurl: Information disclosure via incorrect Proxy-Authorization header reuse (CVE-2026-7168)\n  * libcurl: libcurl: Use-after-free vulnerability leading to Denial of Service (CVE-2026-10536)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:80512",
  "modified": "2026-10-13T09:21:14Z",
  "published": "2026-10-12T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:80512"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-10536"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-5545"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-6253"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-6429"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-7168"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2461202"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2461204"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2461205"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2476979"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2496766"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-80512.html"
    }
  ],
  "related": [
    "CVE-2026-10536",
    "CVE-2026-5545",
    "CVE-2026-6253",
    "CVE-2026-6429",
    "CVE-2026-7168"
  ],
  "schema_version": "1.7.0",
  "summary": "Moderate: curl security update",
  "upstream": [
    "CVE-2026-10536",
    "CVE-2026-5545",
    "CVE-2026-6253",
    "CVE-2026-6429",
    "CVE-2026-7168"
  ]
}



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