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NVD / CVE Program· CNA redhat

CVE-2025-10990: Rexml: rexml: denial of service via inefficient regex parsing

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.54% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: puppet-agent (Red Hat:rhel_satellite_client:6::el8) 0:7.34.0-4.el8sat; puppet-agent (Red Hat:rhel_satellite_client:6::el9) 0:7.34.0-4.el9sat; cjson (Red Hat:satellite_capsule:6.16::el8) 0:1.7.18-2.el8sat.

Low priority for now. Upgrade to puppet-agent (Red Hat:rhel_satellite_client:6::el8) 0:7.34.0-4.el8sat; puppet-agent (Red Hat:rhel_satellite_client:6::el9) 0:7.34.0-4.el9sat; cjson (Red Hat:satellite_capsule:6.16::el8) 0:1.7.18-2.el8sat or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Feb 27, 2026
Updated
Jun 25, 2026
EPSS
0.5% · 46th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-10990

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Satellite 6.16 for RHEL 8

    • 0:8.8.1-3.el8sat and laternot affected · rpm
    • 0:8.8.1-3.el8sat and laternot affected · rpm

  • Red Hat Red Hat Satellite 6.16 for RHEL 9

    • 0:8.8.1-3.el9sat and laternot affected · rpm
    • 0:8.8.1-3.el9sat and laternot affected · rpm

  • Red Hat Red Hat Satellite 6.17 for RHEL 9

    • 0:8.8.1-3.el9sat and laternot affected · rpm
    • 0:8.8.1-3.el9sat and laternot affected · rpm

  • Red Hat Satellite Client 6 for RHEL 8

    • 0:7.34.0-4.el8sat and laternot affected · rpm

  • Red Hat Satellite Client 6 for RHEL 9

    • 0:7.34.0-4.el9sat and laternot affected · rpm

  • www.redhat.com/en/technologies/management/satellite Red Hat Satellite

    • 6.17.5, 6.16.5.4not affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:rhel_satellite_client:6::el8puppet-agentbefore 0:7.34.0-4.el8sat0:7.34.0-4.el8sat
Red Hat:rhel_satellite_client:6::el9puppet-agentbefore 0:7.34.0-4.el9sat0:7.34.0-4.el9sat
Red Hat:satellite_capsule:6.16::el8cjsonbefore 0:1.7.18-2.el8sat0:1.7.18-2.el8sat
Red Hat:satellite_capsule:6.16::el8cjson-debuginfobefore 0:1.7.18-2.el8sat0:1.7.18-2.el8sat
Red Hat:satellite_capsule:6.16::el8cjson-debugsourcebefore 0:1.7.18-2.el8sat0:1.7.18-2.el8sat
Red Hat:satellite_capsule:6.16::el8puppet-agentbefore 0:8.8.1-3.el8sat0:8.8.1-3.el8sat
Red Hat:satellite_capsule:6.16::el8python-djangobefore 0:4.2.24-0.1.el8pc0:4.2.24-0.1.el8pc
Red Hat:satellite_capsule:6.16::el8python3.11-djangobefore 0:4.2.24-0.1.el8pc0:4.2.24-0.1.el8pc
Red Hat:satellite_capsule:6.17::el9cjsonbefore 0:1.7.18-2.el9sat0:1.7.18-2.el9sat
Red Hat:satellite_capsule:6.17::el9cjson-debuginfobefore 0:1.7.18-2.el9sat0:1.7.18-2.el9sat
Red Hat:satellite_capsule:6.17::el9cjson-debugsourcebefore 0:1.7.18-2.el9sat0:1.7.18-2.el9sat
Red Hat:satellite_capsule:6.17::el9puppet-agentbefore 0:8.8.1-3.el9sat0:8.8.1-3.el9sat
Red Hat:satellite_capsule:6.17::el9python-djangobefore 0:4.2.24-0.1.el9pc0:4.2.24-0.1.el9pc
Red Hat:satellite_capsule:6.17::el9python3.11-djangobefore 0:4.2.24-0.1.el9pc0:4.2.24-0.1.el9pc
RubyGemsrexmlbefore 3.3.93.3.9

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-1531Foreman-kubevirt: foreman_kubevirt: man-in-the-middle due to insecure default ssl verification
    32Monitor
  • CVE-2026-1530Fog-kubevirt: fog-kubevirt: man-in-the-middle vulnerability due to disabled certificate validation
    32Monitor
  • CVE-2026-12515Katello: missing repository authorization in content_uploads exposes cross-product content existence
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:cjson0:1.7.18-2.el9sat · Red Hat:satellite_capsule:6.17::el9Package registry (OSV)
red hat:cjson-debuginfo0:1.7.18-2.el9sat · Red Hat:satellite_capsule:6.17::el9Package registry (OSV)
red hat:cjson-debugsource0:1.7.18-2.el9sat · Red Hat:satellite_capsule:6.17::el9Package registry (OSV)
red hat:puppet-agent0:8.8.1-3.el9sat · Red Hat:satellite_capsule:6.17::el9Package registry (OSV)
red hat:python-django0:4.2.24-0.1.el9pc · Red Hat:satellite_capsule:6.17::el9Package registry (OSV)
red hat:python3.11-django0:4.2.24-0.1.el9pc · Red Hat:satellite_capsule:6.17::el9Package registry (OSV)
RubyGems:rexml3.3.9Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-1333 · Inefficient Regular Expression Complexity

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

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References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records