CVE-2026-102634: sgl-project sglang · Use of Multiple Resources with Duplicate Identifier
Affects sgl-project sglangSource CVE Database V5
Not known to be exploited · CVSS 8.7 High.
Data as of 12 Nov 2026, 23:24 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 48% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| sgl-projectsglang | Affected
| Fixed in– |
PyPIsglangpkg:pypi/sglangOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is available, consider implementing request rate limiting or input validation controls to detect and block duplicate bootstrap_room values in /generate requests if feasible.
Description
SGLang through 0.5.20 in prefill/decode disaggregation mode fails to validate duplicate bootstrap_room fields in /generate requests with Mooncake KV transfer backend. Unauthenticated attackers can send concurrent requests with identical bootstrap_room values to crash scheduler processes or hang other users' requests until transfer timeout.
References
- github.com/sgl-project/sglang/issues/40125 (opens in a new tab)
- github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/disaggregation/common/conn.py (opens in a new tab)
- github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/disaggregation/mooncake/conn.py (opens in a new tab)
- github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/disaggregation/decode.py (opens in a new tab)
- github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/managers/io_struct.py (opens in a new tab)
- github.com/sgl-project/sglang (opens in a new tab)
- vulncheck.com/advisories/sglang-through-0.5.20-denial-of-service-via-duplicate-bootstrap-room (opens in a new tab)