CVE-2026-116580: lxsmnsyc seroval · Deserialization of Untrusted Data
Affects lxsmnsyc serovalSource CVE Database V5
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.3 High : upgrade to 1.6.8 soon.
Data as of 26 Oct 2026, 20:58 UTC
- Patch
- Available – fixed in 1.6.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LExploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade lxsmnsyc seroval to 1.6.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| lxsmnsycseroval | Affected
| Fixed in
|
Description
Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.8, fromJSON rebuilds an AsyncIteratorFactoryInstance by calling source.on(listener) without requiring source to be a genuine internal stream. With untrusted Seroval input and an application plugin that returns a callable value or an object exposing an on method, a crafted node can reuse an identifier so the deserializer invokes the plugin-produced value. This is an incomplete-fix variant of CVE-2026-59940. The resulting confidentiality, integrity, or availability impact depends on the behavior exposed by the application plugin. This issue is fixed in version 1.6.8.
References
- github.com/lxsmnsyc/seroval/security/advisories/GHSA-7rv5-mrxv-xcr9 (opens in a new tab)
- github.com/lxsmnsyc/seroval/commit/3edc78b495ea0d6bd498143e5b3e56996607c5f2 (opens in a new tab)
- github.com/lxsmnsyc/seroval/commit/50926b3ee198fb757e6ce3aa70efeed38d931c8d (opens in a new tab)
- github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.8 (opens in a new tab)