CVE-2026-116476 json
a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition
published 14d ago modified 7d ago also EUVD-2026-110071
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- github.com/a2aproject/a2a-dotnet#453 pull request
Is CVE-2026-116476 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7d ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS: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 |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:C |
| CNA | 3.0 | 5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:X/RC:C |
| CNA | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:ND/RC:C |
| CNA | 4.0 | 5.3 | CVSS: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 |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| CNA | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:N/I:P/A:P |
Affected products
- a2aproject a2a-dotnet
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
-
github.com
/a2aproject/a2a-dotnet/pull/453
issue-tracking, patch
-
vuldb.com
/vuln/426389
vdb-entry, technical-description
-
vuldb.com
/vuln/426389/cti
signature, permissions-required
-
vuldb.com
/cve/CVE-2026-116476
third-party-advisory
-
vuldb.com
/submit/1014886
third-party-advisory
-
github.com
/a2aproject/a2a-dotnet/
product
Sources
- CVE List CVE-2026-116476
- NVD CVE-2026-116476
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.