CVE-2026-109225CWE-770denial-of-service

CVE-2026-109225

High · published October 12, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
36.0
In the wild
Unconfirmed
What it is

SGLang through 0.5.21 contains an unbounded memory allocation vulnerability that allows unauthenticated remote attackers to exhaust memory by uploading oversized files to /v1/audio/transcriptions. Attackers can send concurrent large multipart uploads, which are fully read into memory before validation, to crash the HTTP/tokenizer worker and deny service.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00428 · 36.0th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-10-12T18:17Z
References (4)
https://github.com/sgl-project/sglang · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/entrypoints/http_server.py#L1847-L1871 · [email protected]https://github.com/sgl-project/sglang/issues/43709 · [email protected]https://www.vulncheck.com/advisories/sglang-through-0.5.21-memory-exhaustion-dos-via-v1-audio-transcriptions-upload · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 14:04Z
    SGLang through 0.5.21 Memory Exhaustion DoS via /v1/audio/transcriptions Upload
    cvelistv5
  • 12 OCT 14:04Z
    SGLang through 0.5.21 Memory Exhaustion DoS via /v1/audio/transcriptions Upload
    cvelistv5