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TI-2024-26802 Aliases CVE-2024-39908GHSA-4xqq-m2hx-25v8

Denial of service in REXML

Priority LOW 23CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Partial Red Hat: 2 fixed, 5 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.

Summary

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01493 74th percentileScored 2026-11-07
Fix Partial rexml (ruby): 3.3.2rexml (RubyGems): 3.3.2Red Hat: 4 advisoriesRed Hat: 2 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rubyrexmlbefore 3.3.23.3.2Patch availableCNA
—rexml (RubyGems)before 3.3.23.3.2Patch availableGHSA-4xqq-m2hx-25v8
  • rexml Vendorruby Affected before 3.3.2 Fixed in 3.3.2 Patch available CNA
  • rexml (RubyGems) Vendor— Affected before 3.3.2 Fixed in 3.3.2 Patch available GHSA-4xqq-m2hx-25v8

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*before 3.3.2Vulnerableruby
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:* Versions before 3.3.2 Vulnerable ·ruby
  • cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp

Remediation

  • Fix · CNA rexml (ruby) Fixed in 3.3.2
  • Fix · GHSA-4xqq-m2hx-25v8 rexml (RubyGems) Fixed in 3.3.2 Advisory →

Red Hat 4 advisories

  • RHSA-2025:4488 Released 2025-05-06 · Red Hat rating Moderate
    ruby:3.1 security update
    • Red Hat Enterprise Linux AppStream (v. 9) ruby-3.1.7-146.module+el9.5.0+23003+a4c328ce.aarch64::ruby:3.1, ruby-3.1.7-146.module+el9.5.0+23003+a4c328ce.i686::ruby:3.1, ruby-3.1.7-146.module+el9.5.0+23003+a4c328ce.ppc64le::ruby:3.1 +47
  • RHSA-2025:4063 Released 2025-04-23 · Red Hat rating Moderate
    ruby:3.1 security update
    • Red Hat Enterprise Linux AppStream (v. 8) ruby-3.1.7-145.module+el8.10.0+23011+f9d508f8.aarch64::ruby:3.1, ruby-3.1.7-145.module+el8.10.0+23011+f9d508f8.i686::ruby:3.1, ruby-3.1.7-145.module+el8.10.0+23011+f9d508f8.ppc64le::ruby:3.1 +47
  • RHSA-2024:6784 Released 2024-09-18 · Red Hat rating Moderate
    ruby:3.3 security update
    • Red Hat Enterprise Linux AppStream (v. 8) ruby-3.3.5-3.module+el8.10.0+22271+6a48b0b9.aarch64::ruby:3.3, ruby-3.3.5-3.module+el8.10.0+22271+6a48b0b9.i686::ruby:3.3, ruby-3.3.5-3.module+el8.10.0+22271+6a48b0b9.ppc64le::ruby:3.3 +47
Show 1 more Red Hat advisories
  • RHSA-2024:6785 Released 2024-09-18 · Red Hat rating Moderate
    ruby:3.3 security update
    • Red Hat Enterprise Linux AppStream (v. 9) ruby-3.3.5-3.module+el9.4.0+22273+463af10f.aarch64::ruby:3.3, ruby-3.3.5-3.module+el9.4.0+22273+463af10f.i686::ruby:3.3, ruby-3.3.5-3.module+el9.4.0+22273+463af10f.ppc64le::ruby:3.3 +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat 3scale API Management Platform 2AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenStack Platform 16.1AffectedNo fix planned: Out of support scope
Red Hat OpenStack Platform 16.2AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:6784, RHSA-2025:4063
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:6785, RHSA-2025:4488
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat OpenStack Platform 17.1
  • Red Hat Satellite 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-39908
  2. 2026-10-03 Alias added: GHSA-4xqq-m2hx-25v8

References

Advisory 4

Other 5

  • TI-2024-27968 REXML DoS vulnerability CVSS 3.1HIGH 7.5
  • TI-2024-27475 REXML DoS vulnerability CVSS 3.1HIGH 7.5
  • TI-2021-09890 The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1… CVSS 3.1HIGH 7.5
  • TI-2024-33228 REXML ReDoS vulnerability CVSS 4.0MEDIUM 6.6
  • TI-2024-23250 REXML contains a denial of service vulnerability CVSS 3.1MEDIUM 5.3
  • TI-2024-29047 REXML denial of service vulnerability CVSS 3.1MEDIUM 5.9
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences