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CVE-2022-50999 sparklemotion CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-25T16:16:44.240Z and has not been modified since then. The vulnerability affects Nokogiri versions before 1.13.5 and involves an integer overflow in the packaged libxml2 buffer handling functions, allowing attackers to cause out-of-bounds memory writes by crafting multi-gigabyte XML files. This could lead to information disclosure, data modification, or denial of service. Developers and administrators should assess their exposure and apply patches or upgrades. The CVE Program and NVD provide official records and assessments of this vulnerability.

Vendor
sparklemotion
Product
nokogiri
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-25
Original CVE updated
2026-09-01
Advisory published
2026-08-25
Advisory updated
2026-09-01

Who should care

Developers and administrators using Nokogiri versions before 1.13.5 should be aware of this vulnerability and take steps to mitigate it. This includes assessing their exposure, applying patches or upgrades, and implementing compensating controls to prevent exploitation.

Technical summary

The CVE-2022-50999 vulnerability is caused by an integer overflow in the packaged libxml2 buffer handling functions in Nokogiri versions before 1.13.5. This allows attackers to cause out-of-bounds memory writes by crafting multi-gigabyte XML files, potentially leading to information disclosure, data modification, or denial of service. The vulnerability can be mitigated by upgrading to Nokogiri version 1.13.5 or later and implementing compensating controls such as input validation and XML file size limits.

Defensive priority

High priority due to the HIGH CVSS score of 8.8 and potential for information disclosure, data modification, or denial of service.

Recommended defensive actions

  • Inventory and assess Nokogiri versions in use, focusing on versions before 1.13.5.
  • Apply patches or upgrade to Nokogiri version 1.13.5 or later.
  • Implement compensating controls such as input validation and XML file size limits.
  • Monitor for suspicious XML file uploads or processing.
  • Review and update security policies to address potential XML-based attacks.

Evidence notes

The CVE-2022-50999 vulnerability is caused by an integer overflow in the packaged libxml2 buffer handling functions in Nokogiri versions before 1.13.5. This allows attackers to cause out-of-bounds memory writes by crafting multi-gigabyte XML files, potentially leading to information disclosure, data modification, or denial of service. The CVE Program and NVD provide official records and assessments of this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-50999 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-50999

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2022-50999 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-50999

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.