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GHSA-rv3x-xq3r-8j9h.json
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GHSA-rv3x-xq3r-8j9h.json
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{
"schema_version": "1.4.0",
"id": "GHSA-rv3x-xq3r-8j9h",
"modified": "2023-06-09T19:32:32Z",
"published": "2023-06-09T19:32:32Z",
"aliases": [
"CVE-2021-37634"
],
"summary": "LeafKit allows XSS with untrusted user input",
"details": "### Impact\nThis affects anyone passing unsanitised data to Leaf's variable tags. Before this fix, Leaf would not escape any strings passed to tags as variables. If an attacker managed to find a variable that was rendered with their unsanitised data, they could inject scripts into a generated Leaf page, which could enable XSS attacks if other mitigations such as a Content Security Policy were not enabled.\n\n### Patches\nThis has been patched in 1.3.0\n\n### Workarounds\nSanitise any untrusted input before passing it to Leaf and enable a CSP to block inline script and CSS data.\n\n### References\nhttps://github.com/vapor/leaf-kit-ghsa-rv3x-xq3r-8j9h/pull/1\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Leaf Kit](https://github.com/vapor/leaf-kit)\n* Email us at [security@vapor.codes](mailto:security@vapor.codes)",
"severity": [
],
"affected": [
{
"package": {
"ecosystem": "SwiftURL",
"name": "github.com/vapor/leaf-kit"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.0"
}
]
}
]
}
],
"references": [
{
"type": "WEB",
"url": "https://github.com/vapor/leaf-kit/security/advisories/GHSA-rv3x-xq3r-8j9h"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37634"
},
{
"type": "PACKAGE",
"url": "https://github.com/vapor/leaf-kit"
},
{
"type": "WEB",
"url": "https://github.com/vapor/leaf-kit/releases/tag/1.3.0"
}
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"severity": "MODERATE",
"github_reviewed": true,
"github_reviewed_at": "2023-06-09T19:32:32Z",
"nvd_published_at": "2021-08-09T20:15:00Z"
}
}