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UnratedFix available

Fix CVE(s): CVE-2026-40176, CVE-2026-40261

Type: advisorySources: OSV

* Non-maintainer upload by the TuxCare ELS team. * CVE-2026-40261: Prevent a command injection vulnerability in Perforce::syncCodeBase(), which appended the source reference to the 'p4 sync -f' command without escaping. Package metadata served by a malicious or compromised Composer repository could inject shell metacharacters, leading to command execution even when Perforce is not installed. - debian/patches/0018-CVE-2026-40261.patch * CVE-2026-40176: Prevent a command injection vulnerability in Perforce::generateP4Command(), which interpolated the Perforce connection parameters (user, client, port) into the 'p4' command line without escaping. A malicious composer.json declaring a Perforce VCS repository could inject shell metacharacters, leading to command execution even when Perforce is not installed. Also backport the prerequisite upstream fix for Perforce::connectClient(), which passed the client spec path through the shell redirection of the same command line with only spaces escaped. - debian/patches/0019-CVE-2026-40176.patch

Products
composer
Affected versions
Not specified
Fixed versions
1.8.4-1+deb10u4+tuxcare.els1
CVEs
CVE-2026-40176, CVE-2026-40261
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 11:21 UTC · Revision 1

Source evidence

Fix CVE(s): CVE-2026-40176, CVE-2026-40261

core-osv · Original source

Published 18 Aug 2026, 14:47 UTC

* Non-maintainer upload by the TuxCare ELS team. * CVE-2026-40261: Prevent a command injection vulnerability in Perforce::syncCodeBase(), which appended the source reference to the 'p4 sync -f' command without escaping. Package metadata served by a malicious or compromised Composer repository could inject shell metacharacters, leading to command execution even when Perforce is not installed. - debian/patches/0018-CVE-2026-40261.patch * CVE-2026-40176: Prevent a command injection vulnerability in Perforce::generateP4Command(), which interpolated the Perforce connection parameters (user, client, port) into the 'p4' command line without escaping. A malicious composer.json declaring a Perforce VCS repository could inject shell metacharacters, leading to command execution even when Perforce is not installed. Also backport the prerequisite upstream fix for Perforce::connectClient(), which passed the client spec path through the shell redirection of the same command line with only spaces escaped. - debian/patches/0019-CVE-2026-40176.patch

osv:CLSA-2026-1787064466

composer

Fixed versions: 1.8.4-1+deb10u4+tuxcare.els1

Complete source record
{
  "id": "2f9c61276f770ed60eaba92d1f40cbd2c73f53310848067da8018f8637e70de8",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1787064466",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2026-40176, CVE-2026-40261",
    "summary": "* Non-maintainer upload by the TuxCare ELS team. * CVE-2026-40261: Prevent a command injection vulnerability in Perforce::syncCodeBase(), which appended the source reference to the 'p4 sync -f' command without escaping. Package metadata served by a malicious or compromised Composer repository could inject shell metacharacters, leading to command execution even when Perforce is not installed. - debian/patches/0018-CVE-2026-40261.patch * CVE-2026-40176: Prevent a command injection vulnerability in Perforce::generateP4Command(), which interpolated the Perforce connection parameters (user, client, port) into the 'p4' command line without escaping. A malicious composer.json declaring a Perforce VCS repository could inject shell metacharacters, leading to command execution even when Perforce is not installed. Also backport the prerequisite upstream fix for Perforce::connectClient(), which passed the client spec path through the shell redirection of the same command line with only spaces escaped. - debian/patches/0019-CVE-2026-40176.patch",
    "evidence": "osv:CLSA-2026-1787064466",
    "products": [
      {
        "name": {
          "value": "composer",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.4-1+deb10u4+tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1787064466",
      "aliases": [
        "CLSA-2026-1787064466"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.4-1+deb10u4+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "composer",
            "purl": "pkg:deb/tuxcare/composer?distro=debian-10",
            "ecosystem": "TuxCare:Debian:10"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787064466.json"
          }
        }
      ],
      "modified": "2026-10-26T09:31:52.613459333Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-40176",
        "CVE-2026-40261"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1787064466.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40176",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40261"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-40176",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-40261",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 448790,
  "published_at": "2026-08-18T14:47:57+00:00"
}