CVE-2026-104846 Seroval - Remote Code Execution

Seroval 0.12.0 to 1.6.2 contains a remote code execution caused by deserialization of attacker-controlled thenables in fromJSON, letting attackers trigger code execution via native Promise resolution, exploit requires crafted JSON input.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-843

Vendor fix

Update to version 1.6.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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