Security advisory

{
  "id": "075968ecda188c02c85434ec9a410532a5edad1bdba2c60bdbf2c2692e11778a",
  "url": "https://osv.dev/vulnerability/CVE-2020-13756",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-13756",
    "summary": "Sabberworm PHP CSS Parser before 8.3.1 calls eval on uncontrolled data, possibly leading to remote code execution if the function allSelectors() or getSelectorsBySpecificity() is called with input from an attacker.",
    "evidence": "osv:CVE-2020-13756",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-13756",
      "aliases": [
        "CVE-2020-13756",
        "GHSA-phrq-v4q2-hmq6"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/MyIntervals/PHP-CSS-Parser",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d217848e1396ef962fb1997cf3e2421acba7f796"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sabberworm:php_css_parser:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "8.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.3.0",
            "8.2.0",
            "8.1.0",
            "8.0.0",
            "7.0.3",
            "6.0.1",
            "5.2.0",
            "5.1.2",
            "5.0.8",
            "4.0.0",
            "3.0.0",
            "2.0.0",
            "1.0.0",
            "7.0.2",
            "7.0.1",
            "7.0.0",
            "6.0.0",
            "5.1.1",
            "5.1.0",
            "5.0.7",
            "5.0.6",
            "5.0.5",
            "5.0.4",
            "5.0.3",
            "5.0.2",
            "5.0.1",
            "5.0.0",
            "v0.9",
            "0.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13756.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/myintervals/php-css-parser",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4"
                },
                {
                  "fixed": "d217848e1396ef962fb1997cf3e2421acba7f796"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d217848e1396ef962fb1997cf3e2421acba7f796"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "8.3.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.3.0",
            "8.2.0",
            "8.1.0",
            "8.0.0",
            "7.0.3",
            "6.0.1",
            "5.2.0",
            "5.1.2",
            "5.0.8",
            "4.0.0",
            "3.0.0",
            "2.0.0",
            "1.0.0",
            "7.0.2",
            "7.0.1",
            "7.0.0",
            "6.0.0",
            "5.1.1",
            "5.1.0",
            "5.0.7",
            "5.0.6",
            "5.0.5",
            "5.0.4",
            "5.0.3",
            "5.0.2",
            "5.0.1",
            "5.0.0",
            "v0.9",
            "0.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13756.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:48.507140720Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00013.html",
        "https://github.com/sabberworm/PHP-CSS-Parser/releases/tag/8.3.1",
        "https://github.com/sabberworm/PHP-CSS-Parser/commit/2ebf59e8bfbf6cfc1653a5f0ed743b95062c62a4"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-13756",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382973,
  "published_at": "2020-06-03T14:15:12.703+00:00"
}