Critical severity9.8NVD Advisory· Published Feb 18, 2021· Updated Jun 17, 2026

CVE-2021-27335

Description

KollectApps before 4.8.16c is affected by insecure Java deserialization, leading to Remote Code Execution via a ysoserial.payloads.CommonsCollections parameter.

Affected products

KollectApps/KollectAppsdescription
KollectApps/KollectAppsllm-create
Range: <4.8.16c

Patches

Vulnerability mechanics

References

hacked0x90.net/index.php/2021/02/15/kollectapp-insecure-java-deserialization/nvdExploitThird Party Advisory

News mentions

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cvss	0.637
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000