Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2021-27335 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://hacked0x90.net/index.php/2021/02/15/kollectapp-insecure-java-deserialization/ CVEExploitThird Party Advisory
https://hacked0x90.net/index.php/2021/02/15/kollectapp-insecure-java-deserialization/ [email protected]ExploitThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-502Deserialization of Untrusted Data[email protected]

Affected Products

ProductVersions
kollectapp kollect
< 4.8.16c

CPE

  • cpe:2.3:a:kollectapp:kollect:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-27335
NVD Published Date:
Feb 18, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-27335 Details - Not Deferred