Critical
Security advisory
SGLang uses an expert-parallel backup subsystem that exposes a ZeroMQ PULL socket on a routable network interface that does not contain authentication or deserialization safeguards, allowing an attacker to provide a malicious pickle file that results in unauthenticated remote code execution when the feature is enabled and the service is reachable over the network.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-14890
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 04:46 UTC · Revision 1
Source evidence
SGLang uses an expert-parallel backup subsystem that exposes a ZeroMQ PULL socket on a routable network interface that does not contain authentication or deserialization safeguards, allowing an attacker to provide a malicious pickle file that results in unauthenticated remote code execution when the feature is enabled and the service is reachable over the network.
osv:CVE-2026-14890
Complete source record
{
"id": "d2bbfb14a8d3fdf85dd511bcc171a7c396d398d1d2a6f54851c83b09b153d481",
"url": "https://osv.dev/vulnerability/CVE-2026-14890",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-14890",
"summary": "SGLang uses an expert-parallel backup subsystem that exposes a ZeroMQ PULL socket on a routable network interface that does not contain authentication or deserialization safeguards, allowing an attacker to provide a malicious pickle file that results in unauthenticated remote code execution when the feature is enabled and the service is reachable over the network.",
"evidence": "osv:CVE-2026-14890",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-14890",
"aliases": [
"CVE-2026-14890"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/sgl-project/sglang",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "49e384ce9d304648e9959666ecb8ce8cd98d0deb"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "0.5.14"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"cpe": "cpe:2.3:a:lmsys:sglang:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "0.5.14"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-14890.json"
}
}
],
"modified": "2026-10-28T02:30:46.527590436Z",
"provider": "osv",
"references": [
"https://github.com/sgl-project/sglang/blob/main/python/sglang/srt/elastic_ep/expert_backup_manager.py",
"https://www.kb.cert.org/vuls/id/326070",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14890.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-14890"
],
"provider_metadata": {
"cna_assigner": "certcc",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14890.json"
}
},
"related_cves": [
{
"value": "CVE-2026-14890",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 514637,
"published_at": "2026-07-16T14:43:44.087+00:00"
}