CVSS v3
8.5
HIGH
EPSS Score
84.5%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
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.
Active exploitation of CVE-2021-39141 has not been confirmed. The EPSS score is 84.5%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2021-39141 has a CVSS v3 base score of 8.5 (HIGH severity).
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Ranked by exploit probability (EPSS).