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CVE-2024-49761

24
FAUCET Score

CVE-2024-49761 is a Regular Expression Denial of Service (ReDoS) vulnerability affecting the REXML gem, an XML toolkit for Ruby, specifically versions prior to 3.3.9. This flaw occurs when parsing XML containing numerous digits within hex numeric character references (&#x...;), impacting Ruby 3.1 and earlier versions. With a CVSS score of 7.5 (High), this vulnerability allows an unauthenticated attacker to cause a denial of service (availability impact) with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.3.9CPE matchmatch criteria
cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*
10CPE matchmatch criteria
cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:*

CVSS Data

CVSS version used by this source: 4.0

6.6MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
UNREPORTED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 51st percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (66)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 rubygem-rexml 3.3.9-2 on Azure Linux 3.0Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: azl3 rubygem-rexml 3.3.9-1 on Azure Linux 3.0Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: azl3 ruby 3.3.5-3 on Azure Linux 3.0Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: azl3 ruby 3.3.5-1 on Azure Linux 3.0Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 17208-16823Fixed in: 3.2.7-3
microsoftpatch availablevia msrc
Product: 19724-17086Fixed in: 3.2.7-3
microsoftpatch availablevia msrc
Product: 17209-16823Fixed in: 3.1.4-8
microsoftpatch availablevia msrc
Product: 19723-17086Fixed in: 3.1.4-8
microsoftpatch availablevia msrc
Product: 17596-17084Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 19393-17084Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 17652-17084Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: 20629-17084Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 3.1.4-8
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 3.2.7-3
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 3.1.4-8
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 3.2.7-3
microsoftpatch availablevia msrc
Product: cbl2 rubygem-rexml 3.2.7-3 on CBL Mariner 2.0Fixed in: 3.2.7-3
microsoftpatch availablevia msrc
Product: cbl2 rubygem-rexml 3.2.7-4 on CBL Mariner 2.0Fixed in: 3.2.7-3
microsoftpatch availablevia msrc
Product: cbl2 ruby 3.1.4-8 on CBL Mariner 2.0Fixed in: 3.1.4-8
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: cbl2 ruby 3.1.4-9 on CBL Mariner 2.0Fixed in: 3.1.4-8
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: ruby-0:3.0.7-162.el9_4.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: ruby:3.1-9040020241205144759.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.15 for RHEL 8Fixed in: puppet-agent-0:7.34.0-4.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 8Fixed in: puppet-agent-0:8.8.1-2.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 8Fixed in: puppetserver-0:8.6.2-3.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 8Fixed in: rubygem-foreman_rh_cloud-0:10.0.7-1.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 8Fixed in: rubygem-foreman_webhooks-0:3.2.4-1.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 8Fixed in: satellite-0:6.16.5.3-1.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 9Fixed in: puppet-agent-0:8.8.1-2.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 9Fixed in: puppetserver-0:8.6.2-3.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 9Fixed in: rubygem-foreman_rh_cloud-0:10.0.7-1.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 9Fixed in: rubygem-foreman_webhooks-0:3.2.4-1.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.16 for RHEL 9Fixed in: satellite-0:6.16.5.3-1.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.17 for RHEL 9Fixed in: puppet-agent-0:8.8.1-2.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.17 for RHEL 9Fixed in: puppetserver-0:8.6.2-3.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Satellite Client 6 for RHEL 9Fixed in: puppet-agent-0:7.34.0-3.el9sat
View patch
redhatpatch availablevia redhat_api
Product: Satellite Client 6 for RHEL 8Fixed in: puppet-agent-0:7.34.0-3.el8sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:3.1-8100020241127152928.489197e6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:2.5-8100020241127152844.489197e6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: pcs-0:0.10.18-2.el8_10.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: ruby:2.5-8020020241211125628.4cda2c84
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: ruby:2.5-8040020241211104816.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: ruby:2.5-8040020241211104816.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: ruby:2.5-8040020241211104816.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: ruby:2.5-8060020241211101132.ad008a3a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: ruby:2.5-8060020241211101132.ad008a3a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: pcs-0:0.10.12-6.el8_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: ruby:2.5-8060020241211101132.ad008a3a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: pcs-0:0.10.12-6.el8_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: ruby:3.1-8080020241210144941.63b34585
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: ruby:2.5-8080020241211080135.63b34585
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceFixed in: pcs-0:0.10.15-4.el8_8.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsFixed in: pcs-0:0.10.15-4.el8_8.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: ruby-0:3.0.7-163.el9_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: ruby:3.1-9050020241127153348.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: ruby-0:3.0.4-160.1.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: pcs-0:0.11.1-10.el9_0.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: ruby-0:3.0.4-161.el9_2.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: ruby:3.1-9020020241211060845.9
View patch
rubygemspatch availablevia ghsa
Product: rexmlFixed in: 3.3.9
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: pcs
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp2/zync-rhel9
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp2/zync-rhel8

Vendor Advisories (5)

microsoft2024-Dec/CVE-2024-49761

CVE-2024-49761

Dec 10, 2024
microsoft2024-Nov/CVE-2024-49761

CVE-2024-49761

Nov 12, 2024
redhatCVE-2024-49761Moderate

rexml: REXML ReDoS vulnerability

Oct 28, 2024
rubygemsGHSA-2rxp-v6pw-ch6mmedium

REXML ReDoS vulnerability

Oct 28, 2024
microsoft2024-Oct/CVE-2024-49761Important

REXML ReDoS vulnerability

Oct 8, 2024

References

lists.debian.org / debian-lts-announce/2025/01/msg00011.html
security.netapp.com / advisory/ntap-20241227-0004
Third Party Advisory
github.com / ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
Patch
github.com / ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
Third Party Advisory
ruby-lang.org / en/news/2024/10/28/redos-rexml-cve-2024-49761
Vendor Advisory