pcs: Fix of 10 CVEs

{
  "id": "817a19c7948899f87d7fde9d00d9f718bd1d5d8b907ce3250fd796c828c5d80d",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1790243751",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pcs: Fix of 10 CVEs",
    "summary": "- CVE-2025-46727: unbounded query parsing in bundled rack; a body of repeated keys was parsed in full, exhausting memory. Capped by rack's new query bytesize and parameter-count limits, which pcsd turns into an HTTP 400 - CVE-2025-59830: the same unbounded query parse reached through ';' separated query strings, which rack's parameter counter did not count - CVE-2025-61770: multipart parsing in bundled rack read the whole request body searching for a boundary that never arrived - CVE-2025-61771: multipart parsing in bundled rack retained an unbounded non-file field in memory - CVE-2025-61772: multipart mime part headers in bundled rack were read with no size limit - CVE-2025-61919: Rack::Request#POST read the entire request body before any limit applied, so a 64 MB body was fully buffered - CVE-2024-49761: quadratic regular expression in bundled rexml BaseParser#unnormalize; a long run of zeros in a hex character reference made the parser hang - CVE-2024-52804: quadratic cookie unquoting in bundled tornado _unquote_cookie, which rescanned the value from each escape - CVE-2025-47287: malformed multipart/form-data in bundled tornado logged a warning per bad part instead of rejecting the request, flooding the log - CVE-2026-31958: unbounded part count and part header size in bundled tornado multipart parsing - Stop forwarding client HTTP headers from the Tornado front end to the Ruby part of pcsd, which only ever needed the cookie and the content type",
    "evidence": "osv:CLSA-2026-1790243751",
    "products": [
      {
        "name": {
          "value": "pcs",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.10.18-2.el8.tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "pcs-snmp",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.10.18-2.el8.tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1790243751",
      "aliases": [
        "CLSA-2026-1790243751"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.10.18-2.el8.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "pcs",
            "purl": "pkg:rpm/tuxcare/pcs?distro=centos-stream-8",
            "ecosystem": "TuxCare:CentOS-Stream:8"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1790243751.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.10.18-2.el8.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "pcs-snmp",
            "purl": "pkg:rpm/tuxcare/pcs-snmp?distro=centos-stream-8",
            "ecosystem": "TuxCare:CentOS-Stream:8"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1790243751.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:44.481328861Z",
      "provider": "osv",
      "upstream": [
        "CVE-2024-49761",
        "CVE-2024-52804",
        "CVE-2025-46727",
        "CVE-2025-47287",
        "CVE-2025-59830",
        "CVE-2025-61770",
        "CVE-2025-61771",
        "CVE-2025-61772",
        "CVE-2025-61919",
        "CVE-2026-31958"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/centos-stream8els/CLSA-2026-1790243751.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-49761",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-52804",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-46727",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-47287",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-59830",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-61770",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-61771",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-61772",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-61919",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-31958"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2024-49761",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2024-52804",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-46727",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-47287",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-59830",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-61770",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-61771",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-61772",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-61919",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-31958",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 450110,
  "published_at": "2026-09-24T09:56:11+00:00"
}