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CVE-2026-23736: Improperly Controlled Modification of Object Prototype Attributes

🗓️ 21 Jan 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 6 Views

Prototype pollution in seroval 1.4.0 and below via malicious keys during JSON deserialization.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-23736
21 Jan 202623:01
–attackerkb
circl
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CVE-2026-23736
22 Jan 202601:16
–circl
cnnvd
CNNVD
Seroval security vulnerabilities
21 Jan 202600:00
–cnnvd
cve
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21 Jan 202623:01
–cve
cvelist
Cvelist
CVE-2026-23736 seroval Affected by Prototype Pollution via JSON Deserialization
21 Jan 202623:01
–cvelist
euvd
EUVD
EUVD-2026-3680
21 Jan 202615:41
–euvd
github
Github Security Blog
seroval Affected by Prototype Pollution via JSON Deserialization
21 Jan 202615:41
–github
mend
Mend
CVE-2026-23736
21 Jan 202623:01
–mend
nvd
NVD
CVE-2026-23736
21 Jan 202623:15
–nvd
opensuse
OPENSUSE Linux
opencode-1.18.26-1.1 on GA media (moderate)
4 Sep 202600:00
–opensuse
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27 Feb 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.3 - 9.8
EPSS0.00302
SSVC
6