{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0250",
  "published": "2026-07-14T01:55:37Z",
  "modified": "2026-07-14T00:57:51Z",
  "summary": "Updated haproxy packages fix security vulnerability",
  "details": "HAProxy through 3.4.0, fixed in commit 5985276, contains an integer overflow\nvulnerability in the fcgi_conn structure's drl field that allows buffer\nmisparse as new FCGI record headers. When contentLength is 65535 and\npaddingLength is 1 or more, the drl field wraps to 0, causing incorrect\nrecord consumption and allowing malicious FastCGI backends to desynchronize\nthe FCGI framing parser, potentially causing request routing errors, response\nsmuggling, or memory safety issues.\n(CVE-2026-55203)\nHAProxy through 3.4.0, fixed in commit 9a6d1fe, contains a null pointer\ndereference vulnerability in hpack_dht_insert() within src/hpack-tbl.c that\nfails to validate the return value of hpack_dht_defrag() when the memory pool\nis exhausted. An attacker can trigger HPACK dynamic table insertions under\nmemory pressure to dereference a NULL pointer and crash HAProxy worker\nprocesses, causing denial of service.\n(CVE-2026-55204)\n",
  "upstream": [
    "CVE-2026-55203",
    "CVE-2026-55204"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0250.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=35748"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "haproxy",
        "purl": "pkg:rpm/mageia/haproxy?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4.2-1.2.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "haproxy",
        "purl": "pkg:rpm/mageia/haproxy?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8.26-1.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}