Cyber Resilience

CVE-2026-7302

Lmsys Sglang 0.5.10

Published
18 May 2026
Modified
17 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 9.1
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS Score 0.0039 32th percentile
Risk Priority 67 floored blend · peak EPSS

Summary

CVE-2026-7302 is a critical-severity Path Traversal: '.../...//' (CWE-35) vulnerability in Lmsys Sglang. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 32th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

SGLangs multimodal generation runtime is vulnerable to an unauthenticated path traversal vulnerability, allowing an attacker to write arbitrary files anywhere the server process has write access, by including ../ sequences in the upload filename when sent to specific endpoints.

CWE(s)
CWE-35

Related Threats

MITRE ATT&CK Enterprise Techniques

T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-15978Same product: Lmsys Sglang
CVE-2026-15969Same product: Lmsys Sglang
CVE-2026-3989Same product: Lmsys Sglang
CVE-2026-3060Same product: Lmsys Sglang
CVE-2026-7304Same product: Lmsys Sglang
CVE-2026-14890Same product: Lmsys Sglang
CVE-2026-3059Same product: Lmsys Sglang
CVE-2026-7301Same product: Lmsys Sglang
CVE-2026-10775Same product: Lmsys Sglang
CVE-2026-5760Same product: Lmsys Sglang

Affected Assets

lmsys
sglang
0.5.10

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly neutralizes path sequences so the traversal cannot be introduced or exploited.

AC-3 Access Enforcement partial match

Enforces access authorizations on the resulting pathname, blocking traversal attempts from succeeding.

AC-4 Information Flow Enforcement partial match

Enforces information flow rules that stop unauthorized directory escapes via crafted paths.

AC-6 Least Privilege partial match

Least privilege reduces the impact of any successful traversal by limiting accessible resources.

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.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and path sanitization that neutralize traversal sequences.

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect path-traversal flaws before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and path-handling controls that directly mitigate path traversal.

A.8.26 Application security requirements partial match
prevents

Application security requirements include rules for safe file-path construction and canonicalization.

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

Secure architecture principles require proper directory restrictions and input sanitization to prevent traversal.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe path concatenation and mandate canonicalization routines.

A.8.3 Information access restriction partial match
mitigates

Information access restriction limits file reachability but does not address the input-validation flaw itself.

References