Description
Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.5.3, seroval.fromJSON() allows attacker-controlled JSON Promise control nodes to operate on values from the general deserialization reference table without verifying genuine internal Promise resolver records, causing deserialization side effects with plugins enabled and potentially unintended server-side invocation or remote code execution when downstream frameworks register callable wrappers. This issue is fixed in version 1.5.3.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lxsmnsyc | seroval | < 1.5.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | opencode | 1.18.26-1.1 | openSUSE-SU-2026:11673-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | seroval | < 1.5.3 | 1.5.3 | GHSA-mv8w-475r-vwqw |
Advisories 1
- openSUSE-SU-2026:11673-1 opencode-1.18.26-1.1 on GA media SUSE / openSUSE Security Updates · Sep 3, 2026