ag-ui-protocol ag-ui SSE Parser sse.ts parseSSEStream resource consumption

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120235
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-01 16:18:14 UTC
Updated2026-11-01 16:18:14 UTC
DescriptionA security vulnerability has been detected in ag-ui-protocol ag-ui up to 0.0.58. Affected is the function parseSSEStream of the file sdks/typescript/packages/client/src/transform/sse.ts of the component SSE Parser. The manipulation leads to resource consumption. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is 9e7b2b00bce215bbf731f1e6094f63812527c432. The affected component should be upgraded.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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

Problem Types: CWE-400 | CWE-404 | CWE-400 Resource Consumption | CWE-404 Denial of Service

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.0CNADECLARED4.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary4AV:N/AC:L/Au:S/C:N/I:N/A:P
2.0CNADECLARED4AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ag-ui-protocol Ag-ui affected 0.0.1 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.2 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.3 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.4 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.5 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.6 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.7 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.8 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.9 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.10 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.11 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.12 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.13 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.14 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.15 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.16 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.17 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.18 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.19 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.20 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.21 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.22 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.23 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.24 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.25 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.26 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.27 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.28 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.29 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.30 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.31 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.32 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.33 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.34 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.35 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.36 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.37 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.38 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.39 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.40 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.41 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.42 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.43 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.44 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.45 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.46 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.47 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.48 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.49 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.50 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.51 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.52 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.53 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.54 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.55 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.56 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.57 Not specified
CNA Ag-ui-protocol Ag-ui affected 0.0.58 Not specified

References

ReferenceSourceLinkTags
github.com/ag-ui-protocol/ag-ui/issues/2522 [email protected] github.com
vuldb.com/submit/1015147 [email protected] vuldb.com
github.com/ag-ui-protocol/ag-ui/commit/9e7b2b00bce215bbf731f1e6094f63812... [email protected] github.com
github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30 [email protected] github.com
vuldb.com/vuln/429594 [email protected] vuldb.com
github.com/ag-ui-protocol/ag-ui/pull/2627 [email protected] github.com
vuldb.com/vuln/429594/cti [email protected] vuldb.com
github.com/ag-ui-protocol/ag-ui [email protected] github.com
vuldb.com/cve/CVE-2026-120235 [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: ez-lbz (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-31T00:00:00.000ZAdvisory disclosed
CNA2026-10-31T01:00:00.000ZVulDB entry created
CNA2026-10-31T21:16:07.000ZVulDB entry last update

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report