{"id":"CVE-2026-116476","aliases":["EUVD-2026-110071","GHSA-xrh4-gq3g-5r95"],"status":"published","title":"a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition","description":"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.","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00202,"percentile":0.10267,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362"],"published":"2026-10-26T18:45:20Z","modified":"2026-11-04T02:31:09Z","products":[{"vendor":"a2aproject","product":"a2a-dotnet"}],"references":[{"url":"https://vuldb.com/vuln/426389","tags":["vdb-entry","technical-description","advisory"]},{"url":"https://vuldb.com/vuln/426389/cti","tags":["signature","permissions-required","report"]},{"url":"https://vuldb.com/cve/CVE-2026-116476","tags":["third-party-advisory","advisory"]},{"url":"https://vuldb.com/submit/1014886","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/a2aproject/a2a-dotnet/pull/453","tags":["issue-tracking","patch","fix"]},{"url":"https://github.com/a2aproject/a2a-dotnet/","tags":["product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116476","tags":["advisory"]},{"url":"https://github.com/a2aproject/a2a-dotnet"},{"url":"https://github.com/advisories/GHSA-xrh4-gq3g-5r95"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116476.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-116476","title":"a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition","description":"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.","status":"published","published":"2026-10-26T18:45:20.493Z","modified":"2026-11-02T18:03:12.392Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":5.4,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.0","score":5.4,"vector":"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","level":"medium","assessor":"cna"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:ND/RC:C","assessor":"cna"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T19:47:06.831391Z"}],"euvd":[{"id":"EUVD-2026-110071","description":"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.","status":"published","published":"2026-10-26T18:45:20Z","modified":"2026-11-02T18:03:12Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-03T05:08:39.228431Z"}],"ghsa":[{"id":"GHSA-xrh4-gq3g-5r95","title":"A weakness has been identified in a2aproject a2a-dotnet up to 1.0.0-preview3. The affected...","description":"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.","status":"published","published":"2026-10-26T21:36:08Z","modified":"2026-10-26T21:36:14Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T15:14:25.770411Z"}],"nvd":[{"id":"CVE-2026-116476","description":"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.","status":"published","published":"2026-10-26T19:16:30.587Z","modified":"2026-11-02T19:17:54.977Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-362"],"updated_at":"2026-11-03T00:02:36.126212Z"}],"osv":[{"id":"CVE-2026-116476","title":"a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition","description":"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.","status":"published","published":"2026-10-26T18:45:20.493Z","modified":"2026-11-04T02:31:09.108092841Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-362"],"updated_at":"2026-11-04T02:54:44.889498Z"}]}}