CVE-2026-118128 json
a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race condition
published 2026-10-27 12 d ago modified 2026-10-28 11 d ago also EUVD-2026-111404
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
A vulnerability has been found in a2aproject a2a-js up to 1.1.0. Impacted is the function ResultManager.applyStatusUpdate of the file src/server/result_manager.ts of the component Task Status Update Handler. Such manipulation leads to race condition. The attack may be launched remotely. Upgrading to version 1.2.0 is recommended to address this issue. The name of the patch is 7b87c9480bfa643f9d2b2eaf06988b3d3a95de25. It is recommended to upgrade the affected component.
Patch / fix
- a2aproject a2a-js 1.2.0
- github.com/a2aproject/a2a-js@7b87c94 commit
- github.com/a2aproject/a2a-js#636 pull request
- github.com/a2aproject/a2a-js/releases/tag/v1.2.0 release
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 11 d ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C |
| CNA | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C |
| CNA | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P/E:ND/RL:OF/RC:C |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| CNA | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P |
Affected products
- a2aproject a2a-js
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
-
github.com
/a2aproject/a2a-js/pull/636
issue-tracking, patch
-
github.com
/a2aproject/a2a-js/commit/7b87c9480bfa643f9d2b2eaf06988b3d3a95de25
patch
-
github.com
/a2aproject/a2a-js/releases/tag/v1.2.0
patch
-
vuldb.com
/vuln/427455
vdb-entry, technical-description
-
vuldb.com
/vuln/427455/cti
signature, permissions-required
-
vuldb.com
/cve/CVE-2026-118128
third-party-advisory
-
vuldb.com
/submit/1015057
third-party-advisory
-
github.com
/a2aproject/a2a-js/
product
Sources
- CVE List CVE-2026-118128
- NVD CVE-2026-118128
Fencer Vulns 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.