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 (...;). 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.
CVE-2024-49761
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 1.6%, top 18% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 69.9%
- KEV
- Not listed
Published
October 28, 2024
Last Modified
November 3, 2025
References (5)
- security-advisories@githubhttps://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f
- security-advisories@githubhttps://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
- security-advisories@githubhttps://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20241227-0004/
Patch Availability(25)
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
RubyGems(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| rexml | 3.1.7.3 ... 3.3.8 (23 versions) | 3.3.9 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(25)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Microsoft MSRCCVE-2024-497612024-11-12
REXML ReDoS vulnerability
- Red HatRHSA-2024:10777MODERATE2024-10-28
RHSA-2024:10777 — Moderate
- Red HatRHSA-2024:10834MODERATE2024-10-28
RHSA-2024:10834 — Moderate
- Red HatRHSA-2024:10850MODERATE2024-10-28
RHSA-2024:10850 — Moderate
- Red HatRHSA-2024:10858MODERATE2024-10-28
RHSA-2024:10858 — Moderate
- Red HatRHSA-2024:10860MODERATE2024-10-28
RHSA-2024:10860 — Moderate
- Red HatRHSA-2024:10961MODERATE2024-10-28
RHSA-2024:10961 — Moderate
- Red HatRHSA-2024:10964MODERATE2024-10-28
RHSA-2024:10964 — Moderate
- Red HatRHSA-2024:10966MODERATE2024-10-28
RHSA-2024:10966 — Moderate
- Red HatRHSA-2024:10977MODERATE2024-10-28
RHSA-2024:10977 — Moderate
- Red HatRHSA-2024:10982MODERATE2024-10-28
RHSA-2024:10982 — Moderate
- Red HatRHSA-2024:10984MODERATE2024-10-28
RHSA-2024:10984 — Moderate
- Red HatRHSA-2024:11001MODERATE2024-10-28
RHSA-2024:11001 — Moderate
- Red HatRHSA-2024:11027MODERATE2024-10-28
RHSA-2024:11027 — Moderate
- Red HatRHSA-2024:11028MODERATE2024-10-28
RHSA-2024:11028 — Moderate
- Red HatRHSA-2024:11029MODERATE2024-10-28
RHSA-2024:11029 — Moderate
- Red HatRHSA-2025:11047MODERATE2024-10-28
RHSA-2025:11047 — Moderate
- Red HatRHSA-2025:12499MODERATE2024-10-28
RHSA-2025:12499 — Moderate
- Red HatRHSA-2025:13269MODERATE2024-10-28
RHSA-2025:13269 — Moderate
- Red HatRHSA-2025:13307MODERATE2024-10-28
RHSA-2025:13307 — Moderate
- Red HatRHSA-2025:15124MODERATE2024-10-28
RHSA-2025:15124 — Moderate
- Red HatRHSA-2025:15371MODERATE2024-10-28
RHSA-2025:15371 — Moderate
- Red HatRHSA-2025:17614MODERATE2024-10-28
RHSA-2025:17614 — Moderate
- UbuntuUSN-7091-1MEDIUM
Ruby vulnerabilities
- UbuntuUSN-7091-2MEDIUM
Ruby vulnerabilities
Data Freshness Timeline
(refreshed 7× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:26 UTCEPSS rescore
- 2026-07-09 19:09 UTCEPSS rescore
- 2026-07-09 19:09 UTCEPSS rescore
- 2026-07-08 15:14 UTCEPSS rescore
- 2026-07-07 13:45 UTCEPSS rescore
- 2026-07-06 16:26 UTCEPSS rescore
- 2026-07-06 02:22 UTCEPSS rescore
- 2026-07-05 02:29 UTCEPSS rescore
- 2026-07-04 06:30 UTCEPSS rescore
- 2026-07-01 15:05 UTCEPSS rescore
- 2026-06-30 23:21 UTCEPSS rescore
- 2026-06-28 14:07 UTCEPSS rescore
- 2026-06-28 04:55 UTCEPSS rescore
- 2026-06-28 04:55 UTCEPSS rescore
- 2026-06-27 03:07 UTCEPSS rescore
- 2026-06-27 03:07 UTCEPSS rescore
- 2026-06-25 19:46 UTCOSV refresh
- 2026-06-25 13:49 UTCEPSS rescore
- 2026-06-24 14:04 UTCEPSS rescore
- 2026-06-24 14:04 UTCEPSS rescore
- 2026-06-23 21:32 UTCEPSS rescore
- 2026-06-23 21:32 UTCEPSS rescore
- 2026-06-22 14:25 UTCEPSS rescore
- 2026-06-22 14:25 UTCEPSS rescore
- 2026-06-21 14:56 UTCEPSS rescore
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- 2026-06-21 01:59 UTCEPSS rescore
- 2026-06-21 01:58 UTCEPSS rescore
- 2026-06-19 19:25 UTCEPSS rescore
- 2026-06-18 17:52 UTCEPSS rescore
- 2026-06-18 17:52 UTCEPSS rescore
- 2026-06-17 17:52 UTCEPSS rescore
- 2026-06-17 17:52 UTCEPSS rescore
- 2026-06-16 17:52 UTCEPSS rescore
- 2026-06-16 17:52 UTCEPSS rescore
- 2026-06-15 17:47 UTCEPSS rescore
- 2026-06-14 23:17 UTCEPSS rescore
- 2026-06-13 22:59 UTCEPSS rescore
- 2026-06-13 22:59 UTCEPSS rescore
- 2026-06-13 22:59 UTCEPSS rescore
- 2026-06-12 23:11 UTCEPSS rescore
- 2026-06-12 23:11 UTCEPSS rescore
- 2026-06-11 13:59 UTCEPSS rescore
- 2026-06-10 22:18 UTCEPSS rescore
- 2026-06-10 13:21 UTCEPSS rescore
- 2026-06-08 14:16 UTCEPSS rescore
- 2026-06-08 14:16 UTCEPSS rescore
- 2026-06-08 08:58 UTCOSV refresh
- 2026-06-06 13:46 UTCEPSS rescore
- 2026-06-06 13:46 UTCEPSS rescore
- 2026-06-05 22:46 UTCEPSS rescore
- 2026-06-05 22:46 UTCEPSS rescore
- 2026-06-05 06:09 UTCEPSS rescore
- 2026-06-05 06:09 UTCEPSS rescore
- 2026-06-04 13:11 UTCEPSS rescore
- 2026-06-04 13:11 UTCEPSS rescore
- 2026-06-02 20:12 UTCEPSS rescore
- 2026-06-01 13:51 UTCEPSS rescore
- 2026-06-01 13:51 UTCEPSS rescore
- 2026-05-31 22:30 UTCEPSS rescore
- 2026-05-31 22:30 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-29 13:43 UTCEPSS rescore
- 2026-05-28 13:44 UTCEPSS rescore
- 2026-05-28 13:44 UTCEPSS rescore
- 2026-05-28 13:44 UTCEPSS rescore
- 2026-05-27 13:40 UTCEPSS rescore
- 2026-05-27 13:40 UTCEPSS rescore
- 2026-05-26 13:43 UTCEPSS rescore
- 2026-05-26 13:43 UTCEPSS rescore
- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-26 07:18 UTCEPSS rescore
- 2026-05-23 19:30 UTCEG score recompute
- 2026-05-23 19:30 UTCVendor advisory
Frequently asked(5)
What is CVE-2024-49761?
When was CVE-2024-49761 disclosed?
Is CVE-2024-49761 actively exploited?
What is the CVSS score of CVE-2024-49761?
How do I remediate CVE-2024-49761?
Dependency Blast Radius
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