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Fencer Vulns
high 7.5

CVE-2025-10990 json

Rexml: rexml: denial of service via inefficient regex parsing

published 2026-02-27 8 mo ago modified 2026-06-26 4 mo ago also EUVD-2025-208140

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x...;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.

Patch / fix

  • Red Hat Red Hat Satellite 6.16 for RHEL 8 0:8.8.1-3.el8sat
  • Red Hat Red Hat Satellite 6.16 for RHEL 9 0:8.8.1-3.el9sat
  • Red Hat Red Hat Satellite 6.17 for RHEL 9 0:8.8.1-3.el9sat
  • Red Hat Satellite Client 6 for RHEL 8 0:7.34.0-4.el8sat
  • Red Hat Satellite Client 6 for RHEL 9 0:7.34.0-4.el9sat
  • puppet-agent RHEL 6 SATELLITE_CLIENT 7.34.0-4.el8sat
  • puppet-agent RHEL 6 SATELLITE_CLIENT 7.34.0-4.el9sat
  • cjson satellite capsule 6.16, satellite 6.16 1.7.18-2.el8sat
  • cjson satellite capsule 6.17, satellite capsule 6.16, satellite 6.17 +1 more 1.7.18-2.el9sat
  • puppet-agent satellite capsule 6.16, satellite 6.16 8.8.1-3.el8sat
  • puppet-agent satellite capsule 6.17, satellite capsule 6.16, satellite 6.17 +1 more 8.8.1-3.el9sat
  • python-django satellite capsule 6.16, satellite 6.16 4.2.24-0.1.el8pc
  • python-django satellite capsule 6.17, satellite capsule 6.16, satellite 6.17 +1 more 4.2.24-0.1.el9pc

red hat advisories RHSA-2025:17693RHSA-2025:17613RHSA-2025:17606

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-2025-10990 updated cvss 7.5

rexml: REXML: Denial of Service via inefficient regex parsing

  • Red Hat Satellite 6.16 for RHEL 8 puppet-agent 8.8.1-3.el8sat Red Hat Satellite 6.16 for RHEL 9 puppet-agent 8.8.1-3.el9sat
    fixed: vendor fix RHSA-2025:17613
  • Red Hat Satellite 6.17 for RHEL 9 puppet-agent 8.8.1-3.el9sat
    fixed: vendor fix RHSA-2025:17606
  • Red Hat Satellite Client 6 for RHEL 8 puppet-agent 7.34.0-4.el8sat Red Hat Satellite Client 6 for RHEL 9 puppet-agent 7.34.0-4.el9sat
    fixed: vendor fix RHSA-2025:17693
  • Red Hat Satellite 6.16 for RHEL 8 cjson 1.7.18-2.el8sat, satellite 6.16.5.4-1.el8sat, rubygem-kafo 7.4.0.1-1.el8sat, python-django 4.2.24-0.1.el8pc, satellite-cli 6.16.5.4-1.el8sat, python3.11-django 4.2.24-0.1.el8pc, +6 more Red Hat Satellite 6.16 for RHEL 9 cjson 1.7.18-2.el9sat, satellite 6.16.5.4-1.el9sat, rubygem-kafo 7.4.0.1-1.el9sat, python-django 4.2.24-0.1.el9pc, satellite-cli 6.16.5.4-1.el9sat, python3.11-django 4.2.24-0.1.el9pc, +6 more Red Hat Satellite 6.17 for RHEL 9 cjson 1.7.18-2.el9sat, foreman 3.14.0.8-1.el9sat, satellite 6.17.5-1.el9sat, foreman-cli 3.14.0.8-1.el9sat, foreman-ec2 3.14.0.8-1.el9sat, foreman-pcp 3.14.0.8-1.el9sat, +19 more
    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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Satellite Client 6 for RHEL 8
  • Red Hat Satellite Client 6 for RHEL 9

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity

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.