Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2017-7957

CVE-2017-7957HIGH

n/a n/a — XStream through 1.4.9, when a certain denyTypes workaround is not used, mishandles attempts to create an instance of the primitive type '…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0493   92.0     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Apr 19  Reserved by mitre
  Apr 29  Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2017-7957. Received CVSS 7.5 and CPE data from NVD.

CWE-20 · CNA: mitre · CVSS v3.1 · 9 references · NVD status: Analyzed

Description

XStream through 1.4.9, when a certain denyTypes workaround is not used, mishandles attempts to create an instance of the primitive type 'void' during unmarshalling, leading to a remote application crash, as demonstrated by an xstream.fromXML("<void/>") call.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 19, 2017	Reserved	Reserved by mitre
April 29, 2017	Published	Published (CNA: mitre)
October 8, 2026	ENRICHED	ENRICHED — CVE-2017-7957. Received CVSS 7.5 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-20

References (9)

http://www.debian.org/security/2017/dsa-3841 [Mailing List, Third Party Advisory]
http://www.securityfocus.com/bid/100687 [Broken Link, Third Party Advisory, VDB Entry]
http://www.securitytracker.com/id/1039499 [Broken Link, Third Party Advisory, VDB Entry]
http://x-stream.github.io/CVE-2017-7957.html [Vendor Advisory]
https://access.redhat.com/errata/RHSA-2017:1832 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2017:2888 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2017:2889 [Third Party Advisory]
https://exchange.xforce.ibmcloud.com/vulnerabilities/125800 [Third Party Advisory, VDB Entry]
https://www-prd-trops.events.ibm.com/node/715749 [Broken Link, Permissions Required]

Authoritative record: CVE-2017-7957 at cve.org

Weaknesses: CWE-20

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2017-7957 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.