Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-26220

LightLLM <= 1.1.0 PD Mode Unsafe Deserialization RCE
Back to all
CVE

CVE-2026-26220

LightLLM <= 1.1.0 PD Mode Unsafe Deserialization RCE

LightLLM version 1.1.0 and prior contain an unauthenticated remote code execution vulnerability in PD (prefill-decode) disaggregation mode. The PD master node exposes WebSocket endpoints that receive binary frames and pass the data directly to pickle.loads() without authentication or validation. A remote attacker who can reach the PD master can send a crafted payload to achieve arbitrary code execution.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/ModelTC/lightllm/blob/a27dfc88c2144ed51a6e160b6fbe20aad66c8fe0/lightllm/server/apihttp.py#L310, https://github.com/ModelTC/lightllm/blob/a27dfc88c2144ed51a6e160b6fbe20aad66c8fe0/lightllm/server/apihttp.py#L331, https://lightllm-en.readthedocs.io/en/latest/index.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26220.json, https://nvd.nist.gov/vuln/detail/CVE-2026-26220, https://www.vulncheck.com/advisories/lightllm-pd-mode-unsafe-deserialization-rce, https://github.com/ModelTC/LightLLM/issues/1213, https://github.com/ModelTC/lightllm, https://chocapikk.com/posts/2026/lightllm-pickle-rce/

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00664%
EPSS Percentile
0.49089%
Introduced Version
0
Fix Available

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading