{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0.04.01"
              },
              {
                "last_affected": "0.6.74-wip-63220cb"
              },
              {
                "introduced": "0.2020.22-wip-b2e97fe0e"
              },
              {
                "last_affected": "0.2021.02-wip-879ef3fe1"
              },
              {
                "introduced": "tyse-v0.2021.02-879ef3fe1-regular"
              },
              {
                "last_affected": "tyse-v0.2021.28-af66b6905-regular"
              }
            ]
          },
          "events": [
            {
              "introduced": "8e90aa7d2eb75c1e43026008c6a7a360a9c39eb8"
            },
            {
              "last_affected": "63220cb02e4036b9ad13b5636c3eccab52a2d16a"
            },
            {
              "introduced": "b2e97fe0e77f68ae5fe045c0be27d357a3124c6c"
            },
            {
              "last_affected": "879ef3fe1e622c6d169ed775af32a1999c4cb6c5"
            },
            {
              "introduced": "879ef3fe1e622c6d169ed775af32a1999c4cb6c5"
            },
            {
              "last_affected": "af66b690544d0c172d365b0129cca7779d4907ef"
            },
            {
              "fixed": "4067e191a909ed06f250d09a40e43aa5edbb0289"
            }
          ],
          "repo": "https://github.com/debiki/talkyard",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "In Talkyard, versions v0.04.01 through v0.6.74-WIP-63220cb, v0.2020.22-WIP-b2e97fe0e through v0.2021.02-WIP-879ef3fe1 and tyse-v0.2021.02-879ef3fe1-regular through tyse-v0.2021.28-af66b6905-regular, are vulnerable to Host Header Injection. By luring a victim application-user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.",
  "id": "CVE-2021-25980",
  "modified": "2026-03-13T21:54:39.913550776Z",
  "published": "2021-11-11T07:15:11.380Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980"
    },
    {
      "type": "FIX",
      "url": "https://github.com/debiki/talkyard/commit/4067e191a909ed06f250d09a40e43aa5edbb0289"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}