CVE-2021-39149
XStream is vulnerable to an Arbitrary Code Execution attack
8.5
HIGH
CVSS 3.1
EPSS 0.63%
Description
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
How to fix CVE-2021-39149
To remediate CVE-2021-39149, upgrade the affected package to a fixed version below.
- —upgrade to 1.4.15-3+deb11u1 or later
- —upgrade to 1.4.18 or later
Is CVE-2021-39149 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.4.15-3+deb11u1
- from 0, < 1.4.18
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |