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CRITICAL

CVE-2021-21351

CVSS v3

9.1

CRITICAL

Score EPSS

82.1 %

probabilité d’exploitation au 2026-10-05

CISA KEV

Non

exploitation connue

Exploitation

—

statut SSVC

Description

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a 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. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.

Détails techniques

Publiée le
2021-03-23

Questions fréquentes

Qu’est-ce que CVE-2021-21351 ?

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a 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. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.

CVE-2021-21351 est-elle activement exploitée ?

Aucune exploitation active de CVE-2021-21351 n’est confirmée. Son score EPSS était de 82.1 % au 2026-10-05, soit la probabilité estimée d’exploitation dans les 30 prochains jours.

Quel est le score CVSS de CVE-2021-21351 ?

CVE-2021-21351 a un score de base CVSS v3 de 9.1 (gravité CRITICAL).

CVE-2021-21351 touche-t-elle votre environnement ?

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