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Fencer Vulns
high 7.5

CVE-2018-10868 json

redhat-certification 7 does not properly restrict the number of recursive definitions of entities in XML documents, allowing an unauthentic…

published 2021-05-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2934

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

redhat-certification 7 does not properly restrict the number of recursive definitions of entities in XML documents, allowing an unauthenticated user to run a "Billion Laugh Attack" by replying to XMLRPC methods when getting the status of an host.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-10868 updated cvss 7.5

redhat-certification: billion laugh attack when getting the status of a host

  • Red Hat Certification for Red Hat Enterprise Linux 7 redhat-certification
    affected: no fix available
  • Red Hat Certification for Red Hat Enterprise Linux 6 redhat-certification
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a redhat-certification

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-776 Improper Restriction of Recursive Entity References in DTDs

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.