CVE-2020-26118 json
In SmartBear Collaborator Server through 13.3.13302, use of the Google Web Toolkit (GWT) API introduces a post-authentication Java deserial…
published 2021-01-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18748
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.8%
- EPSS 3.8% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
3.81% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
support.smartbear.com
/collaborator/docs/server/index.html
product, vendor-advisory
-
support.smartbear.com
/collaborator/docs/general-info/version-history/ver-13/ver-13-0.html
release-notes, vendor-advisory
-
support.smartbear.com
/collaborator/docs/general-info/whats-new.html
release-notes, vendor-advisory
Sources
- CVE List CVE-2020-26118
- NVD CVE-2020-26118
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