Vulnerability-Lookup

CVE-2022-51000 (GCVE-0-2022-51000)

Vulnerability from cvelistv5 – Published: 2026-08-25 15:15 – Updated: 2026-08-28 15:18

Title

Nokogiri before 1.13.2 Multiple Vulnerabilities via libxml2 libxslt

Summary

Nokogiri before 1.13.2 (CRuby, when using packaged libraries) ships vendored libxml2 2.9.12 and libxslt 1.1.34, which are affected by two upstream CVEs. Via CVE-2021-30560 in libxslt, an application transforming XML with untrusted XSL stylesheets is vulnerable to a denial-of-service attack. Via CVE-2022-23308 in libxml2, an application parsing an untrusted document with parse option DTDVALID set to true and NOENT set to false may be vulnerable to denial of service, memory disclosure, or code execution. Nokogiri 1.13.2 upgrades vendored libxml2 to 2.9.13 and libxslt to 1.1.35.

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 16:08 UTC

CWE

CWE-416 - Use After Free

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/sparklemotion/nokogiri/securit…	vendor-advisory
https://github.com/GNOME/libxslt/commit/50f9c9c	patch
https://github.com/GNOME/libxml2/commit/652dd12	patch
https://www.vulncheck.com/advisories/nokogiri-bef…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
sparklemotion	nokogiri	Affected: 0 , < 1.13.2 (semver) Unaffected: 1.13.2 (semver) cpe:2.3:a:nokogiri:nokogiri::::::::

Date Public

2022-02-21 00:00

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2022-51000

Vulnerability from fkie_nvd - Published: 2026-08-25 16:16 - Updated: 2026-08-28 18:56

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/GNOME/libxml2/commit/652dd12
	disclosure@vulncheck.com	https://github.com/GNOME/libxslt/commit/50f9c9c
	disclosure@vulncheck.com	https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-fq42-c5rg-92c2
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/nokogiri-before-multiple-vulnerabilities-via-libxml2-libxslt

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-26T16:08:08.368740Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-25T16:16:44.380",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/GNOME/libxml2/commit/652dd12"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/GNOME/libxslt/commit/50f9c9c"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-fq42-c5rg-92c2"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/nokogiri-before-multiple-vulnerabilities-via-libxml2-libxslt"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-VR3G-6HHH-C3F7

Vulnerability from github – Published: 2026-08-25 18:31 – Updated: 2026-08-28 18:31

Details

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-51000"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-25T16:16:44Z",
    "severity": "CRITICAL"
  },
  "details": "Nokogiri before 1.13.2 (CRuby, when using packaged libraries) ships vendored libxml2 2.9.12 and libxslt 1.1.34, which are affected by two upstream CVEs. Via CVE-2021-30560 in libxslt, an application transforming XML with untrusted XSL stylesheets is vulnerable to a denial-of-service attack. Via CVE-2022-23308 in libxml2, an application parsing an untrusted document with parse option DTDVALID set to true and NOENT set to false may be vulnerable to denial of service, memory disclosure, or code execution. Nokogiri 1.13.2 upgrades vendored libxml2 to 2.9.13 and libxslt to 1.1.35.",
  "id": "GHSA-vr3g-6hhh-c3f7",
  "modified": "2026-08-28T18:31:23Z",
  "published": "2026-08-25T18:31:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-fq42-c5rg-92c2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-51000"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GNOME/libxml2/commit/652dd12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GNOME/libxslt/commit/50f9c9c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sparklemotion/nokogiri/commit/50f9c9c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sparklemotion/nokogiri/commit/652dd12"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/nokogiri-before-multiple-vulnerabilities-via-libxml2-libxslt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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",
      "type": "CVSS_V4"
    }
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2022-51000 (GCVE-0-2022-51000)

FKIE_CVE-2022-51000

GHSA-VR3G-6HHH-C3F7

Tags

Sightings

Nomenclature