MediumCVE-2026-105245

sgl-project sglang HTTP Endpoint http_server.py server_info cleartext transmission (CVE-2026-105245)

Published 05.10.2026Last modified 07.10.2026Sources: CVE.org

Public exploit

What is affected, what to do

A vulnerability has been found in sgl-project sglang up to 0.5.21. This issue affects the function server_info of the file python/sglang/srt/entrypoints/http_server.py of the component HTTP Endpoint.

An exploit is publicly available. The available sources name no fixed version. Check the vendor guidance in the references below.

Affected: SGLang eq 0.5.0..0.5.0
SGLang eq 0.5.1..0.5.1
SGLang eq 0.5.2..0.5.2
SGLang eq 0.5.3..0.5.3
SGLang eq 0.5.4..0.5.4
SGLang eq 0.5.5..0.5.5
SGLang eq 0.5.6..0.5.6
SGLang eq 0.5.7..0.5.7
SGLang eq 0.5.8..0.5.8
SGLang eq 0.5.9..0.5.9
SGLang eq 0.5.10..0.5.10
SGLang eq 0.5.11..0.5.11
SGLang eq 0.5.12..0.5.12
SGLang eq 0.5.13..0.5.13
SGLang eq 0.5.14..0.5.14
SGLang eq 0.5.15..0.5.15
SGLang eq 0.5.16..0.5.16
SGLang eq 0.5.17..0.5.17
SGLang eq 0.5.18..0.5.18
SGLang eq 0.5.19..0.5.19
SGLang eq 0.5.20..0.5.20
SGLang eq 0.5.21..0.5.21

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Metrics

6.3

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: Vendor (CNA), CVSS v4

3.7

CVSS v3

Severity Low on the scale from 0 to 10.

Source: CVE.org

0.2 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 10.4

Show all metrics

Severity: Medium
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 62.36 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: PoC (publicly reported)
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 6.3 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 3.7
CVSS v4 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 6.3
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.2 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 10.4; Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 05.10.2026
CISA assessment (SSVC): Exploitation: proof of concept · not automatable · Technical impact: partial; Source: CISA Vulnrichment, as of 7 October 2026
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-319, CWE-310

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

A vulnerability has been found in sgl-project sglang up to 0.5.21. This issue affects the function server_info of the file python/sglang/srt/entrypoints/http_server.py of the component HTTP Endpoint. Such manipulation of the argument api_key leads to cleartext transmission of sensitive information. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.

Source: cvelistv5, NVD (NIST)

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
sgl-project	sglang	`0.5.2` `0.5.11` `0.5.0` `0.5.19` `0.5.10` `0.5.14` `0.5.4` `0.5.3` `0.5.5` `0.5.8` `0.5.16` `0.5.15` `0.5.12` `0.5.6` `0.5.13` `0.5.20` `0.5.21` `0.5.7` `0.5.9` `0.5.18` `0.5.1` `0.5.17`	— — — — — — — — — — — — — — — — — — — — — —

Vendors and products

Sgl-project SGLang

Weakness classes (CWE)

CWE-319Cleartext Transmission of Sensitive Information
Base
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
Entry at MITRE CWE-319
CWE-310Cryptographic Issues
Category
Entry at MITRE CWE-310

Public exploit references

Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

Public exploit references

Reference tagged as exploit	github.com (opens in a new tab)	PoC (publicly reported)reported, not verified	—

References & sources

vuldb.comVDB-413451 | sgl-project sglang HTTP Endpoint http_server.py server_info cleartext transmissionVulnerability database, Technical description
vuldb.comVDB-413451 | CTI Indicators (IOB, IOC, TTP, IOA)signature, Permissions required
vuldb.comCVE-2026-105245 | CVE Analysis and ReportThird-party advisory
vuldb.comSubmit #975910 | https://github.com/sgl-project/ sglang commit 594ec63 Cleartext Transmission of Sensitive InformationThird-party advisory
github.comsgl-project/sglang/issues/30166Exploit, Issue tracking
github.comsgl-project/sglang/pull/30343Issue tracking, Patch
github.comsgl-project/sglangProduct

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

07.10.2026Record modifiedCISA ADP

CISA assessment (SSVC): exploitation: proof of concept, automatable: no

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	added	—	{"id":"CVE-2026-105245","role":"CISA Coordinator","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"version":"2.0.3","timestamp":"2026-10-07T20:42:36.592062Z"}

Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

05.10.2026ReceivedVulDB

CVSS V4.0: AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

CVSS V3.1: AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS V2: (AV:N/AC:H/Au:N/C:P/I:N/A:N)

Weakness type: CWE-310, CWE-319

Description added or changed

New references:

and 3 more references

Show 14 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Description	added	—	A vulnerability has been found in sgl-project sglang up to 0.5.21. This issue affects the function server_info of the file python/sglang/srt/entrypoints/http_server.py of the component HTTP Endpoint. Such manipulation of the argument api_key leads to cleartext transmission of sensitive information. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.
CVSS	added	—	AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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
CVSS	added	—	AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS	added	—	(AV:N/AC:H/Au:N/C:P/I:N/A:N)
Weakness type (CWE)	added	—	CWE-310
Weakness type (CWE)	added	—	CWE-319
Affected versions (publisher)	added	—	New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/105xxx/CVE-2026-105245.json">CVE-2026-105245</a>
Reference	added	—	https://github.com/sgl-project/sglang/
Reference	added	—	https://github.com/sgl-project/sglang/issues/30166
Reference	added	—	https://github.com/sgl-project/sglang/pull/30343
Reference	added	—	https://vuldb.com/cve/CVE-2026-105245
Reference	added	—	https://vuldb.com/submit/975910
Reference	added	—	https://vuldb.com/vuln/413451
Reference	added	—	https://vuldb.com/vuln/413451/cti

Source identifier: cna@vuldb.com

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