CVE-2020-26118

Name: CVE-2020-26118
Creator: NVD / NIST
Published: 2021-01-11T15:15:12.967+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.76%

Last modified Jun 17, 2026

CVE-2020-26118 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In SmartBear Collaborator Server through 13.3.13302, use of the Google Web Toolkit (GWT) API introduces a post-authentication Java deserialization vulnerability. The application's UpdateMemento class accepts a serialized Java object directly from the user without properly sanitizing it. EPSS estimates a 3.76% chance of exploitation in the next 30 days.

Description

In SmartBear Collaborator Server through 13.3.13302, use of the Google Web Toolkit (GWT) API introduces a post-authentication Java deserialization vulnerability. The application's UpdateMemento class accepts a serialized Java object directly from the user without properly sanitizing it. A malicious object can be submitted to the server via an authenticated attacker to execute commands on the underlying system.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.76%

88.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Smartbear	Collaborator	<= 13.3.13302

References

https://support.smartbear.com/collaborator/docs/general-info/version-history/ver-13/ver-13-0.htmlRelease Notes, Vendor Advisory
https://support.smartbear.com/collaborator/docs/general-info/whats-new.htmlRelease Notes, Vendor Advisory
https://support.smartbear.com/collaborator/docs/server/index.htmlProduct, Vendor Advisory
https://support.smartbear.com/collaborator/docs/general-info/version-history/ver-13/ver-13-0.htmlRelease Notes, Vendor Advisory
https://support.smartbear.com/collaborator/docs/general-info/whats-new.htmlRelease Notes, Vendor Advisory
https://support.smartbear.com/collaborator/docs/server/index.htmlProduct, Vendor Advisory

Timeline

Published: Jan 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26118?

How severe is CVE-2020-26118?

CVE-2020-26118 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.76% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26118?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-26118?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST