a2aproject a2a-go Push Notification agentexec.go CreateExecutor information exposure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-116478
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-26 20:17:55 UTC
Updated2026-10-26 20:17:55 UTC
DescriptionA vulnerability was detected in a2aproject a2a-go up to 2.4.0. This affects the function CreateExecutor of the file a2asrv/agentexec.go of the component Push Notification Handler. The manipulation results in information exposure through error message. It is possible to launch the attack remotely. Upgrading to version 2.5.0 mitigates this issue. The patch is identified as f4d588216b0c9520e94d571bab725c38ce23064c. It is recommended to upgrade the affected component.

Risk And Classification

Primary CVSS: v4.0 6.9 MEDIUM from [email protected]

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

Problem Types: CWE-200 | CWE-209 | CWE-209 Information Exposure Through Error Message | CWE-200 Information Disclosure

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED6.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
3.0CNADECLARED5.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
2.0[email protected]Secondary5AV:N/AC:L/Au:N/C:P/I:N/A:N
2.0CNADECLARED5AV:N/AC:L/Au:N/C:P/I:N/A:N/E:ND/RL:OF/RC:C

CVSS v4.0 Breakdown

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

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

CVSS v3.1 Breakdown

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

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

CVSS v3.0 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA A2aproject A2a-go affected 2.0 Not specified
CNA A2aproject A2a-go affected 2.1 Not specified
CNA A2aproject A2a-go affected 2.2 Not specified
CNA A2aproject A2a-go affected 2.3 Not specified
CNA A2aproject A2a-go affected 2.4.0 Not specified
CNA A2aproject A2a-go unaffected 2.5.0 Not specified

References

ReferenceSourceLinkTags
vuldb.com/submit/1014887 [email protected] vuldb.com
github.com/a2aproject/a2a-go/commit/f4d588216b0c9520e94d571bab725c38ce23... [email protected] github.com
vuldb.com/cve/CVE-2026-116478 [email protected] vuldb.com
github.com/a2aproject/a2a-go/pull/393 [email protected] github.com
vuldb.com/vuln/426391/cti [email protected] vuldb.com
github.com/a2aproject/a2a-go/releases/tag/v2.5.0 [email protected] github.com
vuldb.com/vuln/426391 [email protected] vuldb.com
github.com/a2aproject/a2a-go [email protected] github.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: colorfullbz (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-26T00:00:00.000ZAdvisory disclosed
CNA2026-10-26T01:00:00.000ZVulDB entry created
CNA2026-10-26T12:05:03.000ZVulDB entry last update

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