High severity · published Feb 27, 2026
CVE-2025-10990
Rexml: rexml: denial of service via inefficient regex parsing
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Satellite 6.16 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.16 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.17 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
SC
Satellite Client 6 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
SC
Satellite Client 6 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
Affected product
RH
Red Hat Satellite 6.16 for RHEL 8
Red Hat
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-10990
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-10990
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:17606
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:17613
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:17693
access.redhat.com
https://access.redhat.com/security/cve/CVE-2025-10990
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2398216
github.com
https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
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