CVE-2026-116476

a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition

5.3 Medium

A weakness has been identified in a2aproject a2a-dotnet up to 1.0.0-preview3. The affected element is the function TaskProjection.ApplyStatus of the component TaskProjection. Executing a manipulation can lead to race condition. The attack may be performed from remote. The pull request to fix this issue awaits acceptance.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: Low

Exploit likelihood

0.20%Unchanged since Oct 27, 2026

What each source reports

CVE List Score used 5.3

a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition

Record: CVE-2026-116476
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:C
CVSS 3.0: 5.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:C
CVSS 2.0: 5.5 AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:ND/RC:C
Weakness: CWE-362
Updated: 2026-11-02

EUVDEUVD-2026-110071 5.3

Record: EUVD-2026-110071
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xrh4-gq3g-5r95 5.3

A weakness has been identified in a2aproject a2a-dotnet up to 1.0.0-preview3. The affected...

Record: GHSA-xrh4-gq3g-5r95
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/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 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness: CWE-362
Updated: 2026-11-02

NVD 5.3

Record: CVE-2026-116476
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/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 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS 2.0: 5.5 MediumAV:N/AC:L/Au:S/C:N/I:P/A:P
Weakness: CWE-362
Updated: 2026-11-03

OSV 5.3

a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition

Record: CVE-2026-116476
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Weakness: CWE-362
Updated: 2026-11-04

Affected products

a2aproject a2a-dotnet

History

History
Recorded	Changed	Sources
Nov 4, 2026	facts	EUVD, NVD, OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-116476 is a medium vulnerability (CVSS 5.3) in A2aproject A2a-dotnet, published October 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 10th percentile. No source names a fixed version.