{
  "cveId": "CVE-2026-88807",
  "url": "https://patchblox.com/security/cve/CVE-2026-88807",
  "summary": "CVE-2026-88807 is fixed in 5 products on 1 platform, first by RHSA-2026:91003, released September 21, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libXrender RenderQueryPictFormats Reply Heap-based Buffer Overflow",
  "description": "X.Org X11 libXrender runtime library  \n\nSecurity Fix(es):  \n\n  * libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)\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.",
  "published": "2026-09-21T13:49:21Z",
  "severity": "Moderate",
  "cvss": 8.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
  "cwe": "Heap-based Buffer Overflow",
  "epss": 0.00263,
  "epssPercentile": 0.18214,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88807",
  "fixes": [
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "RHEL 10",
      "fixedVersion": "0.9.11-8.el10_2.1",
      "fix": "RHSA-2026:91003",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-91003",
      "released": "2026-09-21T13:49:21Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "RHEL 8",
      "fixedVersion": "0:0.9.10-8.el8_10",
      "fix": "RHSA-2026:91267",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-91267",
      "released": "2026-10-29T21:38:37Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "RHEL 9",
      "fixedVersion": "0:0.9.10-16.el9_8.2",
      "fix": "RHSA-2026:91057",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-91057",
      "released": "2026-10-30T22:09:46Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "almalinux 10",
      "fixedVersion": "0.9.11-8.el10_2.1",
      "fix": "ALSA-2026:91003",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-91003",
      "released": "2026-11-07T00:40:04Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "almalinux 8",
      "fixedVersion": "0.9.10-8.el8_10",
      "fix": "ALSA-2026:91267",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-91267",
      "released": "2026-11-07T00:40:18Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "almalinux 9",
      "fixedVersion": "0.9.10-16.el9_8.2",
      "fix": "ALSA-2026:91057",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-91057",
      "released": "2026-11-07T00:41:11Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "amzn 2023",
      "fixedVersion": "0.9.11-6.amzn2023.0.2",
      "fix": "ALAS2023-2026-3178",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3178",
      "released": "2026-11-07T01:07:25Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "ol 10",
      "fixedVersion": "0:0.9.11-8.el10_2.1",
      "fix": "ELSA-2026-91003",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-91003",
      "released": "2026-11-07T00:59:15Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "ol 8",
      "fixedVersion": "0:0.9.10-8.el8_10",
      "fix": "ELSA-2026-91267",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-91267",
      "released": "2026-11-07T00:48:28Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "ol 9",
      "fixedVersion": "0:0.9.10-16.el9_8.2",
      "fix": "ELSA-2026-91057",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-91057",
      "released": "2026-11-07T00:52:27Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.9.11-160000.3.1",
      "fix": "OPENSUSE-SU-2026:21909-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21909-1",
      "released": "2026-09-22T11:13:28Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "rocky 10",
      "fixedVersion": "0:0.9.11-8.el10_2.1",
      "fix": "RLSA-2026:91003",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-91003",
      "released": "2026-11-07T00:39:51Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "rocky 8",
      "fixedVersion": "0:0.9.10-8.el8_10",
      "fix": "RLSA-2026:91267",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-91267",
      "released": "2026-11-07T00:39:57Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "rocky 9",
      "fixedVersion": "0:0.9.10-16.el9_8.2",
      "fix": "RLSA-2026:91057",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-91057",
      "released": "2026-11-07T00:39:57Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "sles 15.6",
      "fixedVersion": "0.9.10-150000.3.3.1",
      "fix": "SUSE-SU-2026:4397-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4397-1",
      "released": "2026-09-29T13:36:43Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "sles 15.7",
      "fixedVersion": "0.9.10-150000.3.3.1",
      "fix": "SUSE-SU-2026:4397-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4397-1",
      "released": "2026-09-29T13:36:43Z"
    },
    {
      "platform": "linux",
      "product": "libXrender",
      "release": "sles 16.0",
      "fixedVersion": "0.9.11-160000.3.1",
      "fix": "SUSE-SU-2026:23900-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23900-1",
      "released": "2026-09-22T11:12:56Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "0.9.11-6.amzn2023.0.2",
      "fix": "ALAS2023-2026-3178",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3178",
      "released": "2026-11-07T01:07:25Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "0.9.11-6.amzn2023.0.2",
      "fix": "ALAS2023-2026-3178",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3178",
      "released": "2026-11-07T01:07:25Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:0.9.10-8.el8_10",
      "fix": "RHSA-2026:91267",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-91267",
      "released": "2026-10-29T21:38:37Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "RHEL 9",
      "fixedVersion": "0:0.9.10-16.el9_8.2",
      "fix": "RHSA-2026:91057",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-91057",
      "released": "2026-10-30T22:09:46Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "almalinux 10",
      "fixedVersion": "0.9.11-8.el10_2.1",
      "fix": "ALSA-2026:91003",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-91003",
      "released": "2026-11-07T00:40:04Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "almalinux 8",
      "fixedVersion": "0.9.10-8.el8_10",
      "fix": "ALSA-2026:91267",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-91267",
      "released": "2026-11-07T00:40:18Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "almalinux 9",
      "fixedVersion": "0.9.10-16.el9_8.2",
      "fix": "ALSA-2026:91057",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-91057",
      "released": "2026-11-07T00:41:11Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "amzn 2023",
      "fixedVersion": "0.9.11-6.amzn2023.0.2",
      "fix": "ALAS2023-2026-3178",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3178",
      "released": "2026-11-07T01:07:25Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "ol 10",
      "fixedVersion": "0:0.9.11-8.el10_2.1",
      "fix": "ELSA-2026-91003",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-91003",
      "released": "2026-11-07T00:59:15Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "ol 8",
      "fixedVersion": "0:0.9.10-8.el8_10",
      "fix": "ELSA-2026-91267",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-91267",
      "released": "2026-11-07T00:48:28Z"
    },
    {
      "platform": "linux",
      "product": "libXrender-devel",
      "release": "ol 9",
      "fixedVersion": "0:0.9.10-16.el9_8.2",
      "fix": "ELSA-2026-91057",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-91057",
      "released": "2026-11-07T00:52:27Z"
    },
    {
      "platform": "linux",
      "product": "libxrender",
      "release": "Debian 14",
      "fixedVersion": "1:0.9.13-1",
      "fix": "DEBIAN-CVE-2026-88807",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-88807",
      "released": "2026-09-21T14:17:22Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}