OESA-2026-4511 (CVE-2026-84837)

Vulnerability from osv_openeuler – Published: 2026-10-22 14:36 – Updated: 2026-10-22 14:36 – Source website
VLAI
Summary
rpm security update
Details

The RPM Package Manager (RPM) is a powerful package management system capability as below

Security Fix(es):

A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by rpmbuild -t* to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.(CVE-2026-84837)

A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.(CVE-2026-84838)

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-rpm-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-build-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-debuginfo-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-debugsource-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-devel-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-libs-4.18.2-42.oe2403sp3.aarch64.rpm",
          "rpm-plugin-systemd-inhibit-4.18.2-42.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "rpm-help-4.18.2-42.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "rpm-4.18.2-42.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "python3-rpm-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-build-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-debuginfo-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-debugsource-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-devel-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-libs-4.18.2-42.oe2403sp3.x86_64.rpm",
          "rpm-plugin-systemd-inhibit-4.18.2-42.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "rpm",
        "purl": "pkg:rpm/openEuler/rpm\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.2-42.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The RPM Package Manager (RPM) is a powerful package management system capability as below\r\n\r\nSecurity Fix(es):\n\nA flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.(CVE-2026-84837)\n\nA flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.(CVE-2026-84838)",
  "id": "OESA-2026-4511",
  "modified": "2026-10-22T14:36:01Z",
  "published": "2026-10-22T14:36:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4511"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84837"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84838"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rpm security update",
  "upstream": [
    "CVE-2026-84837",
    "CVE-2026-84838"
  ]
}



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