CVE-2026-109225: Allocation of Resources Without Limits or Throttling in sgl-project sglang
Description
SGLang versions up to 0.5.21 have an unbounded memory allocation vulnerability that allows unauthenticated remote attackers to exhaust server memory by uploading oversized files to the /v1/audio/transcriptions endpoint. This can cause denial of service by crashing the HTTP/tokenizer worker due to concurrent large multipart uploads being fully read into memory before validation.
CVSS v4.0
Score 8.7high
Affected software
sgl-project
sglang
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109225 describes a vulnerability in SGLang through version 0.5.21 where unauthenticated remote attackers can cause unbounded memory allocation by uploading large files to the /v1/audio/transcriptions endpoint. The server reads the entire multipart upload into memory before validating it, enabling attackers to exhaust memory resources and crash the HTTP/tokenizer worker, resulting in denial of service.
Potential Impact
The vulnerability allows unauthenticated attackers to cause a denial of service by exhausting server memory through large concurrent uploads. This disrupts normal service operation by crashing critical server components handling HTTP requests and tokenization.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider implementing upload size limits or rate limiting at the network or application layer to mitigate memory exhaustion risks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-12T13:46:26.547Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6accec5e2cdf04f6569f8104
Added to database: 10/12/2026, 14:19:10 UTC
Last enriched: 10/12/2026, 14:33:35 UTC
Last updated: 10/12/2026, 21:47:19 UTC
Views: 13
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.