CVE-2024-49761 (GCVE-0-2024-49761)

Vulnerability from cvelistv5 – Published: 2024-10-28 14:10 – Updated: 2025-11-03 20:41
VLAI
Title
REXML ReDoS vulnerability
Summary
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.
Severity
6.6 (Medium)
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
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
ruby rexml Affected: < 3.3.9
Create a notification for this product.
ruby rexml Affected: 0 , < 3.3.9 (custom)
    cpe:2.3:a:ruby:rexml:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:ruby:rexml:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "rexml",
            "vendor": "ruby",
            "versions": [
              {
                "lessThan": "3.3.9",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49761",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-28T14:57:03.712021Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-28T14:58:24.116Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:41:10.439Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20241227-0004/"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "rexml",
          "vendor": "ruby",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.3.9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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 \u0026# and x...; in a hex numeric character reference (\u0026#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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333: Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-28T14:10:23.212Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m"
        },
        {
          "name": "https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f"
        },
        {
          "name": "https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761"
        }
      ],
      "source": {
        "advisory": "GHSA-2rxp-v6pw-ch6m",
        "discovery": "UNKNOWN"
      },
      "title": "REXML ReDoS vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-49761",
    "datePublished": "2024-10-28T14:10:23.212Z",
    "dateReserved": "2024-10-18T13:43:23.455Z",
    "dateUpdated": "2025-11-03T20:41:10.439Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-49761",
      "date": "2026-06-05",
      "epss": "0.01645",
      "percentile": "0.82339"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-49761\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2024-10-28T15:15:05.157\",\"lastModified\":\"2025-11-03T21:16:31.620\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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 \u0026# and x...; in a hex numeric character reference (\u0026#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.\"},{\"lang\":\"es\",\"value\":\"REXML es un conjunto de herramientas XML para Ruby. La gema REXML anterior a la versi\u00f3n 3.3.9 tiene una vulnerabilidad ReDoS cuando analiza un XML que tiene muchos d\u00edgitos entre \u0026amp;# y x...; en una referencia de car\u00e1cter num\u00e9rico hexadecimal (\u0026amp;#x...;). Esto no sucede con Ruby 3.2 o posterior. Ruby 3.1 es el \u00fanico Ruby afectado que se mantiene. La gema REXML 3.3.9 o posterior incluye el parche para corregir la vulnerabilidad.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"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\",\"baseScore\":6.6,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"UNREPORTED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1333\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*\",\"versionEndExcluding\":\"3.3.9\",\"matchCriteriaId\":\"326BEE19-C954-4EAA-8473-E76CCD43A48F\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.2.0\",\"matchCriteriaId\":\"F841AE5D-60DD-4E3A-854A-9B7B906BF7E7\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:*\",\"matchCriteriaId\":\"5333B745-F7A3-46CB-8437-8668DB08CD6F\"}]}]}],\"references\":[{\"url\":\"https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20241227-0004/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://security.netapp.com/advisory/ntap-20241227-0004/\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-12-27T16:03:07.802Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49761\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-28T14:57:03.712021Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ruby:rexml:*:*:*:*:*:*:*:*\"], \"vendor\": \"ruby\", \"product\": \"rexml\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"3.3.9\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-28T14:58:16.358Z\"}}], \"cna\": {\"title\": \"REXML ReDoS vulnerability\", \"source\": {\"advisory\": \"GHSA-2rxp-v6pw-ch6m\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 6.6, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"ruby\", \"product\": \"rexml\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 3.3.9\"}]}], \"references\": [{\"url\": \"https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m\", \"name\": \"https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f\", \"name\": \"https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761\", \"name\": \"https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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 \u0026# and x...; in a hex numeric character reference (\u0026#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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1333\", \"description\": \"CWE-1333: Inefficient Regular Expression Complexity\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2024-10-28T14:10:23.212Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49761\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-27T16:03:07.802Z\", \"dateReserved\": \"2024-10-18T13:43:23.455Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2024-10-28T14:10:23.212Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.