Security Resilience

CVE-2026-109226

Public PoC
Published
12 October 2026
Modified
13 October 2026
CVSS Score v4 8.7
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0046 39th percentile
Risk Priority 45 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-109226 is a high-severity Data Amplification (CWE-409) vulnerability. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 39th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SC-6 (Resource Availability) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

SGLang through 0.5.21 contains a decompression amplification vulnerability in load_audio that allows remote attackers to exhaust memory by submitting highly compressed audio decoded without duration or sample limits. Attackers can supply small FLAC-encoded silence files through audio_url or audio_data inputs…

more

that expand into massive PCM buffers, exhausting worker memory and CPU for denial of service.

CWE(s)
CWE-409

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
attack.mitre.org →
T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-32949Shared CWE-409
CVE-2025-66471Shared CWE-409
CVE-2026-49158Shared CWE-409
CVE-2026-97334Shared CWE-409
CVE-2026-23943Shared CWE-409
CVE-2026-59803Shared CWE-409
CVE-2026-46387Shared CWE-409
CVE-2026-54556Shared CWE-409
CVE-2026-80189Shared CWE-409
CVE-2026-32044Shared CWE-409

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SC-6 Resource Availability partial match

Resource allocation controls bound memory/CPU consumption that a data-amplification attack would otherwise exhaust.

SI-10 Information Input Validation partial match

Input validation can reject or limit decompression of data whose expansion ratio exceeds safe thresholds.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

DE.CM-09 partial match
blocks

Runtime monitoring of compute resources can detect exhaustion caused by decompression bombs.

PR.IR-04 partial match
blocks

Capacity planning and monitoring directly limits the availability impact of data-amplification attacks.

PR.PS-06 partial match
blocks

Secure-development practices include input-validation and resource-limit checks that prevent improper handling of compressed data.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.6.5 Responsibilities after termination or change of employment partial match
removes
A.8.16 Monitoring activities partial match
finds

Monitoring can detect anomalous resource usage but does not prevent the weakness.

A.8.19 Installation of software on operational systems partial match
removes
A.8.25 Secure development life cycle partial match
blocks

Secure development lifecycle includes input validation and resource-limit checks that mitigate data-amplification attacks.

A.8.26 Application security requirements partial match
blocks

Application security requirements can mandate limits on decompression size and ratio.

A.8.27 Secure system architecture and engineering principles partial match
blocks

Secure architecture principles encourage defensive design against resource-exhaustion threats.

References