High
Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header
Type: advisorySources: OSV
Capgo before 12.128.2 fails to enforce limited_to_orgs and limited_to_apps constraints on subkeys provided via x-limited-key-id header in middlewareKey function. Attackers can bypass subkey scope restrictions by referencing their own subkeys, causing all downstream route handlers to use the unrestricted parent key instead of the scoped subkey.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-56232
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 18:54 UTC · Revision 1
Source evidence
Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header
core-osv · Original sourcePublished 24 Jun 2026, 11:53 UTC
Capgo before 12.128.2 fails to enforce limited_to_orgs and limited_to_apps constraints on subkeys provided via x-limited-key-id header in middlewareKey function. Attackers can bypass subkey scope restrictions by referencing their own subkeys, causing all downstream route handlers to use the unrestricted parent key instead of the scoped subkey.
osv:CVE-2026-56232
Complete source record
{
"id": "e8900b33c7cff2695e9577ed4af4b32064c2c27aaea08a7d7d4396723af5eff0",
"url": "https://osv.dev/vulnerability/CVE-2026-56232",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header",
"summary": "Capgo before 12.128.2 fails to enforce limited_to_orgs and limited_to_apps constraints on subkeys provided via x-limited-key-id header in middlewareKey function. Attackers can bypass subkey scope restrictions by referencing their own subkeys, causing all downstream route handlers to use the unrestricted parent key instead of the scoped subkey.",
"evidence": "osv:CVE-2026-56232",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-56232",
"aliases": [
"CVE-2026-56232",
"GHSA-2h89-vcvx-5pvh"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/Cap-go/capgo.app",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "6685e5f11adef257bf3d085e481f4d8ebcec602e"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "12.128.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "12.128.2"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56232.json"
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}
],
"modified": "2026-10-28T02:30:38.478814908Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56232.json",
"https://github.com/Cap-go/capgo/security/advisories/GHSA-2h89-vcvx-5pvh",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56232",
"https://www.vulncheck.com/advisories/capgo-subkey-scope-bypass-in-middlewarekey-via-x-limited-key-id-header"
],
"provider_metadata": {
"cwe_ids": [
"CWE-863"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56232.json"
}
},
"related_cves": [
{
"value": "CVE-2026-56232",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 505900,
"published_at": "2026-06-24T11:53:09.41+00:00"
}