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Sylius before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 Admin Password Reset Poisoning via Host Header

Type: advisorySources: OSV

Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-100870
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 16:34 UTC · Revision 1

Source evidence

Sylius before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 Admin Password Reset Poisoning via Host Header

core-osv · Original source

Published 27 Sept 2026, 13:09 UTC

Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts.

osv:CVE-2026-100870
Complete source record
{
  "id": "41e7c90c826e194db2d025958fefd8c03f65d4fffffee1e0486a3c4ee13bc2f1",
  "url": "https://osv.dev/vulnerability/CVE-2026-100870",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Sylius before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 Admin Password Reset Poisoning via Host Header",
    "summary": "Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts.",
    "evidence": "osv:CVE-2026-100870",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-100870",
      "aliases": [
        "CVE-2026-100870",
        "GHSA-77w3-2367-7xvq"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sylius/sylius",
              "type": "GIT",
              "events": [
                {
                  "introduced": "74dd42a09e50620a5f54f9a01676e003160d9f3a"
                },
                {
                  "fixed": "b3561f3fbd6a2b10d8d5bd7532b7cadecadb6fa7"
                },
                {
                  "introduced": "c8799bea638c5e4ab07a28f66f628d38d8174b41"
                },
                {
                  "fixed": "5c7dbe3788f259abbdd7d62a4f281439c6b85bb1"
                },
                {
                  "introduced": "57dcd9e53275a880c77d4ec2c4fad9f567f420be"
                },
                {
                  "fixed": "1f9bcfa25348479135b5927b4ecfadfd22f97dc8"
                },
                {
                  "introduced": "6dd3ca9895be7ab7e6cb71f37af2ef66af17cbe0"
                },
                {
                  "fixed": "439a8f66dbf05f369337dc8358e2698d57aba663"
                },
                {
                  "introduced": "7aa47be3a617f75337d73d245352ea700bc8a1ef"
                },
                {
                  "fixed": "253169df80a8c8babf479c6de5ce3d422e37dc6a"
                },
                {
                  "fixed": "1255d75b20d3d88a5e5c8d46791504134c838480"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.12.0"
                      },
                      {
                        "fixed": "1.12.25"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.13.0"
                      },
                      {
                        "fixed": "1.13.17"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.14.0"
                      },
                      {
                        "fixed": "1.14.20"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.1.16"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.2.0"
                      },
                      {
                        "fixed": "2.2.9"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1255d75b20d3d88a5e5c8d46791504134c838480"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "253169df80a8c8babf479c6de5ce3d422e37dc6a"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.2.9"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.8",
            "v2.2.7",
            "v2.2.6",
            "v2.1.15",
            "v2.2.5",
            "v2.1.14",
            "v2.2.4",
            "v2.1.13",
            "v1.14.19",
            "v1.13.16",
            "v1.12.24",
            "v2.2.3",
            "v2.1.12",
            "v1.14.18",
            "v1.13.15",
            "v1.12.23",
            "v1.14.17",
            "v1.13.14",
            "v1.12.22",
            "v2.2.2",
            "v2.1.11",
            "v1.14.16",
            "v2.2.1",
            "v2.1.10",
            "v1.14.15",
            "v1.13.13",
            "v1.12.21",
            "v2.2.0",
            "v2.1.9",
            "v1.14.14",
            "v1.13.12",
            "v1.12.20",
            "v2.1.8",
            "v1.14.13",
            "v2.1.7",
            "v1.14.12",
            "v2.1.6",
            "v1.14.11",
            "v2.1.5",
            "v1.14.10",
            "v1.14.9",
            "v2.1.4",
            "v1.14.8",
            "v2.1.3",
            "v1.14.7",
            "v2.1.2",
            "v1.14.6",
            "v2.1.1",
            "v2.1.0",
            "v1.14.5",
            "v1.14.4",
            "v1.14.3",
            "v1.13.11",
            "v2.0.3",
            "v1.14.2",
            "v1.13.10",
            "v2.0.2",
            "v2.0.1",
            "v1.14.1",
            "v1.13.9",
            "v2.0.0",
            "v1.14.0",
            "v1.13.8",
            "v1.13.7",
            "v1.13.6",
            "v1.13.5",
            "v1.13.4",
            "v1.12.19",
            "v1.13.3",
            "v1.12.18",
            "v1.13.2",
            "v1.12.17",
            "v1.13.1",
            "v1.12.16",
            "v1.13.0",
            "v1.12.15",
            "v1.12.14",
            "v1.12.13",
            "v1.12.12",
            "v1.12.11",
            "v1.12.10",
            "v1.12.9",
            "v1.12.8",
            "v1.12.7",
            "v1.12.6",
            "v1.12.5",
            "v1.12.4",
            "v1.12.3",
            "v1.12.2",
            "v1.12.1",
            "v1.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100870.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.647736977Z",
      "provider": "osv",
      "references": [
        "https://packagist.org",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100870.json",
        "https://github.com/Sylius/Sylius/releases/tag/v2.2.9",
        "https://github.com/Sylius/Sylius/security/advisories/GHSA-77w3-2367-7xvq",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-100870",
        "https://www.vulncheck.com/advisories/sylius-before-1.12.25-1.13.17-1.14.20-2.1.16-and-2.2.9-admin-password-reset-poisoning-via-host-header",
        "https://github.com/Sylius/Sylius/commit/1255d75b20d3d88a5e5c8d46791504134c838480",
        "https://github.com/Sylius/Sylius/pull/19215",
        "https://github.com/Sylius/Sylius"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-640"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100870.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-100870",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504744,
  "published_at": "2026-09-27T13:09:54.715+00:00"
}