SGLang through 0.5.22 Memory Exhaustion via Unauthenticated Mooncake Decode Registrations
SGLang through 0.5.22 with the Mooncake disaggregation backend accepts unauthenticated decode registration messages on the Prefill rank ZMQ PULL socket, allowing denial of service. Network-adjacent attackers can send many registrations with unique mooncake_session_id values and large nested-buffer frames to exhaust Prefill memory until the scheduler is OOM-killed.
CVE-2026-112269
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-112269
sglang
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/sgl-project/sglang",
"vendor": "sgl-project",
"product": "sglang",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "0.5.22"
}
],
"packageURL": "pkg:pypi/sglang",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-112269
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39710 · Revision 1
- Added to Heist Feed
- Publisher date