How severe is CVE-2024-49761?

CVE-2024-49761 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-49761 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-49761?

CVE-2024-49761 primarily affects Ruby-lang Rexml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-49761?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-49761 have an EU (EUVD) identifier?

Yes. CVE-2024-49761 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2910.

When was CVE-2024-49761 published?

CVE-2024-49761 was published on 2024-10-28 and last updated on 2026-06-17.

CVE-2024-49761

CVE-2024-49761 is a high-severity vulnerability in Ruby-lang Rexml with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.6
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-2910
Weakness: CWE-1333
Affected product: Ruby-lang Rexml
Published: 2024-10-28
Last modified: 2026-06-17

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

Frequently asked questions

What is CVE-2024-49761?: REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.
How severe is CVE-2024-49761?: CVE-2024-49761 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-49761 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-49761?: CVE-2024-49761 primarily affects Ruby-lang Rexml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-49761?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-49761 have an EU (EUVD) identifier?: Yes. CVE-2024-49761 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2910.
When was CVE-2024-49761 published?: CVE-2024-49761 was published on 2024-10-28 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*
cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:*

More vulnerabilities in Ruby-lang Rexml

CVE-2021-28965 — High (CVSS 7.5): 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 does not properly address XML…
CVE-2024-43398 — Medium (CVSS 5.9): REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has…
CVE-2025-58767 — Medium (CVSS 5.3): REXML is an XML toolkit for Ruby. The REXML gems from 3.3.3 to 3.4.1 has a DoS vulnerability when parsing XML…
CVE-2024-41946 — Medium (CVSS 5.3): REXML is an XML toolkit for Ruby. The REXML gem 3.3.2 has a DoS vulnerability when it parses an XML that has many…
CVE-2024-41123 — Medium (CVSS 5.3): REXML is an XML toolkit for Ruby. The REXML gem before 3.3.2 has some DoS vulnerabilities when it parses an XML that…
CVE-2024-35176 — Medium (CVSS 5.3): REXML is an XML toolkit for Ruby. The REXML gem before 3.2.6 has a denial of service vulnerability when it parses an…

All CVEs affecting Ruby-lang Rexml →

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CVE-2023-29487 — Critical (CVSS 9.1): An issue was discovered in Heimdal Thor agent versions 3.4.2 and before on Windows and 2.6.9 and before on macOS,…
CVE-2026-47138 — High (CVSS 8.7): Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to…
CVE-2025-6998 — High (CVSS 8.7): ReDoS in strip_whitespaces() function in cps/string_helper.py in Calibre Web and Autocaliweb allows unauthenticated…

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