High
node-got — security advisory
http-cache-semantics through 4.2.0 contains a cache validation vulnerability in the _varyMatches() function that fails to properly validate Vary header wildcards due to byte-for-byte string comparison. Attackers can request URLs previously fetched by other clients to receive cached responses intended for different users, disclosing sensitive information across clients.
- Products
- node-got
- Affected versions
- 11.8.1+~cs53.13.17-3, 11.8.2+~cs58.7.32-2, 11.8.3+~cs58.7.37-1, 11.8.5+~cs58.13.36-3, 11.8.5+~cs58.13.36-5, 11.8.5+~cs58.13.36-6, 11.8.5+~cs58.13.36-7, 7.1.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-93750
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:33 UTC · Revision 1
Source evidence
http-cache-semantics through 4.2.0 contains a cache validation vulnerability in the _varyMatches() function that fails to properly validate Vary header wildcards due to byte-for-byte string comparison. Attackers can request URLs previously fetched by other clients to receive cached responses intended for different users, disclosing sensitive information across clients.
osv:UBUNTU-CVE-2026-93750
node-got
Fixed versions: Not specified
node-got
Fixed versions: Not specified
node-got
Fixed versions: Not specified
node-got
Fixed versions: Not specified
node-got
Fixed versions: Not specified
node-got
Fixed versions: Not specified
Complete source record
{
"id": "202ad2b444a0822a70bceecad5d5681498ab838c424f468b1f2a5b17808476fe",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-93750",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-93750",
"summary": "http-cache-semantics through 4.2.0 contains a cache validation vulnerability in the _varyMatches() function that fails to properly validate Vary header wildcards due to byte-for-byte string comparison. Attackers can request URLs previously fetched by other clients to receive cached responses intended for different users, disclosing sensitive information across clients.",
"evidence": "osv:UBUNTU-CVE-2026-93750",
"products": [
{
"name": {
"value": "node-got",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "7.1.0-1",
"evidence": "/affected/0/versions"
}
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{
"name": {
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"evidence": "/affected/1/package/name"
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"affected_versions": [
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"evidence": "/affected/1/versions"
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{
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},
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{
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"evidence": "/affected/2/versions"
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{
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"evidence": "/affected/2/versions"
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{
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},
{
"name": {
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"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
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"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
}
]
},
{
"name": {
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"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "11.8.5+~cs58.13.36-5",
"evidence": "/affected/5/versions"
},
{
"value": "11.8.5+~cs58.13.36-6",
"evidence": "/affected/5/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-93750",
"aliases": [
"UBUNTU-CVE-2026-93750"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-got",
"purl": "pkg:deb/ubuntu/node-got?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"7.1.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93750.json"
},
"ecosystem_specific": {
"binaries": [
{
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"binary_version": "7.1.0-1"
}
]
}
},
{
"ranges": [
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"package": {
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"purl": "pkg:deb/ubuntu/node-got?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"7.1.0-1"
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"database_specific": {
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"package": {
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"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
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"11.8.2+~cs58.7.32-2",
"11.8.3+~cs58.7.37-1"
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"database_specific": {
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},
"ecosystem_specific": {
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"binary_version": "11.8.3+~cs58.7.37-1"
}
]
}
},
{
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"11.8.5+~cs58.13.36-3"
],
"database_specific": {
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},
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{
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"package": {
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
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"11.8.5+~cs58.13.36-7"
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"ecosystem_specific": {
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},
{
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"package": {
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"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"11.8.5+~cs58.13.36-5",
"11.8.5+~cs58.13.36-6"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
"binary_name": "node-got",
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}
]
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}
],
"modified": "2026-10-17T13:01:18.504108082Z",
"provider": "osv",
"upstream": [
"CVE-2026-93750"
],
"references": [
"https://ubuntu.com/security/CVE-2026-93750",
"https://www.cve.org/CVERecord?id=CVE-2026-93750",
"https://github.com/kornelski/http-cache-semantics/issues/57",
"https://github.com/kornelski/http-cache-semantics",
"https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L483-L501",
"https://www.vulncheck.com/advisories/http-cache-semantics-through-4.2.0-cross-client-cache-disclosure-via-vary-wildcard"
]
},
"related_cves": [
{
"value": "CVE-2026-93750",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 361592,
"published_at": "2026-09-18T18:18:00+00:00"
}