CVE-2021-43859
CVSS v3
7.5
HIGH
Score EPSS
7.9 %
probabilité d’exploitation au 2026-10-05
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.
Détails techniques
- Publiée le
- 2022-02-01
Questions fréquentes
Qu’est-ce que CVE-2021-43859 ?
XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.
CVE-2021-43859 est-elle activement exploitée ?
Aucune exploitation active de CVE-2021-43859 n’est confirmée. Son score EPSS était de 7.9 % au 2026-10-05, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2021-43859 ?
CVE-2021-43859 a un score de base CVSS v3 de 7.5 (gravité HIGH).
CVE-2021-43859 touche-t-elle votre environnement ?
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Autres vulnérabilités 2021 à trier
Classées par probabilité d’exploitation (EPSS).