{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0315",
  "published": "2026-08-03T18:47:23Z",
  "modified": "2026-08-03T17:40:55Z",
  "summary": "Updated libvncserver packages fix security vulnerabilities",
  "details": "The updated packages fix security vulnerabilities:\nHeap Out-of-Bounds Read in HandleUltraZipBPP due to unchecked\nsubrectangle count. (CVE-2026-32853)\nNULL pointer dereferences in httpd proxy handlers via malformed\nCONNECT/GET requests. (CVE-2026-32854)\nLibVNCClient Tight Gradient decoding allows malicious server-triggered\nheap/stack OOB writes. (CVE-2026-44988)\nAttacker-controlled heap out-of-bounds write in libvncclient Tight\ndecoder. (CVE-2026-50538)\n",
  "upstream": [
    "CVE-2026-32853",
    "CVE-2026-32854",
    "CVE-2026-44988",
    "CVE-2026-50538"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0315.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=35628"
    },
    {
      "type": "WEB",
      "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/SULCQANWMHMI72ZJZEJWSA2YD3ZSRUKQ/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/LibVNC/libvncserver/security/advisories/GHSA-jcc5-8wj4-7c58"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8463-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8494-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/LibVNC/libvncserver/security/advisories/GHSA-v9pm-47h4-jcq8"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "libvncserver",
        "purl": "pkg:rpm/mageia/libvncserver?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.15-2.1.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "libvncserver",
        "purl": "pkg:rpm/mageia/libvncserver?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.14-1.1.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}