HotCRP vulnerable to remote code execution through formulas

{
  "id": "28f0c6c9ddd7bb0f6bd3633d5b910827eeed582bd1dedceda2e5f56eed27d967",
  "url": "https://osv.dev/vulnerability/CVE-2026-23836",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "HotCRP vulnerable to remote code execution through formulas",
    "summary": "HotCRP is conference review software. A problem introduced in April 2024 in version 3.1 led to inadequately sanitized code generation for HotCRP formulas which allowed users to trigger the execution of arbitrary PHP code. The problem is patched in release version 3.2.",
    "evidence": "osv:CVE-2026-23836",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-23836",
      "aliases": [
        "CVE-2026-23836",
        "GHSA-hpqh-j6qx-x57h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kohler/hotcrp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b216ddc5e714e7a69fffed1916f939313666cc18"
                },
                {
                  "fixed": "0b9ae08b75800dfba75e14a411e504012057f002"
                },
                {
                  "fixed": "4674fcfbb76511072a1145dad620756fc1d4b4e9"
                },
                {
                  "fixed": "bfc7e0db15df6ed6d544a639020d2ce05a5f0834"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:hotcrp:hotcrp:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0"
                      },
                      {
                        "fixed": "3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4674fcfbb76511072a1145dad620756fc1d4b4e9"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bfc7e0db15df6ed6d544a639020d2ce05a5f0834"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "= 3.1",
            "v3.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23836.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:47.258845439Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23836.json",
        "https://github.com/kohler/hotcrp/security/advisories/GHSA-hpqh-j6qx-x57h",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23836",
        "https://github.com/kohler/hotcrp/commit/4674fcfbb76511072a1145dad620756fc1d4b4e9",
        "https://github.com/kohler/hotcrp/commit/bfc7e0db15df6ed6d544a639020d2ce05a5f0834"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23836.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23836",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515019,
  "published_at": "2026-01-19T18:06:04.928+00:00"
}