CVE-2026-65843
sync-rpc: Arbitrary remote code execution vulnerability
sync-rpc runs asynchronous commands synchronously by putting them in a separate proces. Prior to version 1.3.7, if an attacker could guess the correct port and it was not blocked via a firewall, it was possible to load and execute arbitrary JavaScript files stored on the server running sync-rpc. This issue has been patched in version 1.3.7.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| sync-rpc ForbesLindesay |
< 1.3.7 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/ForbesLindesay/sync-rpc/security/advisories/GHSA-2x86-cf3f-86gwCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/ForbesLindesay/sync-rpc/commit/ffccfe5bc39ad2e291a79c9e5afe6155ad311f07CNA: GitHub_M · x_refsource_MISC
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