GHSA-HPM8-9QX6-JVWV
Vulnerability from github – Published: 2026-04-01 23:09 – Updated: 2026-04-01 23:09
VLAI?
Summary
Parser Server's streaming file download bypasses afterFind file trigger authorization
Details
Impact
File downloads via HTTP Range requests bypass the afterFind(Parse.File) trigger and its validators on storage adapters that support streaming (e.g. the default GridFS adapter). This allows access to files that should be protected by afterFind trigger authorization logic or built-in validators such as requireUser.
Patches
The streaming file download path now executes the afterFind(Parse.File) trigger before sending any data. Authentication is resolved from the session token header so that trigger validators can distinguish authenticated from unauthenticated requests.
Workarounds
Use beforeFind(Parse.File) instead of afterFind(Parse.File) for file access authorization. The beforeFind trigger runs on all download paths including streaming.
Severity ?
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "parse-server"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.7.1-alpha.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "npm",
"name": "parse-server"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.6.71"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-34784"
],
"database_specific": {
"cwe_ids": [
"CWE-285"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-01T23:09:14Z",
"nvd_published_at": "2026-03-31T20:16:29Z",
"severity": "HIGH"
},
"details": "### Impact\n\nFile downloads via HTTP Range requests bypass the `afterFind(Parse.File)` trigger and its validators on storage adapters that support streaming (e.g. the default GridFS adapter). This allows access to files that should be protected by `afterFind` trigger authorization logic or built-in validators such as `requireUser`.\n\n### Patches\n\nThe streaming file download path now executes the `afterFind(Parse.File)` trigger before sending any data. Authentication is resolved from the session token header so that trigger validators can distinguish authenticated from unauthenticated requests.\n\n### Workarounds\n\nUse `beforeFind(Parse.File)` instead of `afterFind(Parse.File)` for file access authorization. The `beforeFind` trigger runs on all download paths including streaming.",
"id": "GHSA-hpm8-9qx6-jvwv",
"modified": "2026-04-01T23:09:14Z",
"published": "2026-04-01T23:09:14Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-hpm8-9qx6-jvwv"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34784"
},
{
"type": "WEB",
"url": "https://github.com/parse-community/parse-server/pull/10361"
},
{
"type": "WEB",
"url": "https://github.com/parse-community/parse-server/pull/10362"
},
{
"type": "WEB",
"url": "https://github.com/parse-community/parse-server/commit/053109b3ee71815bc39ed84116c108ff9edbf337"
},
{
"type": "WEB",
"url": "https://github.com/parse-community/parse-server/commit/a0b0c69fc44f87f80d793d257344e7dcbf676e22"
},
{
"type": "PACKAGE",
"url": "https://github.com/parse-community/parse-server"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Parser Server\u0027s streaming file download bypasses afterFind file trigger authorization"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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