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CVE-2022-50999— Nokogiri before 1.13.5 Integer Overflow via libxml2

Quick assessment

Affected
sparklemotion nokogiri
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nokogiri 1.13.5 之前的版本中，打包的 libxml2 缓冲区处理函数存在整数溢出漏洞，攻击者可利用该漏洞导致越界内存写入。攻击者可通过构造多 GB 大小的 XML 文件来触发缓冲区溢出，从而导致信息泄露、数据篡改或服务拒绝（DoS）。

CVSS 8.6 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
sparklemotion nokogiri < 1.13.5 affected
1.13.5 unaffected
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I. Basic Information for CVE-2022-50999

Vulnerability Information
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Vulnerability Title
Nokogiri before 1.13.5 Integer Overflow via libxml2
Source: CVE Program / CVE List V5
Vulnerability Description
Nokogiri versions before 1.13.5 contain an integer overflow vulnerability in packaged libxml2 buffer handling functions that allows attackers to cause out-of-bounds memory writes. Attackers can exploit this by crafting multi-gigabyte XML files to trigger buffer overflows resulting in information disclosure, data modification, or denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sparklemotion nokogiri 0 ~ 1.13.5 -

II. Public POCs for CVE-2022-50999

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III. Intelligence Information for CVE-2022-50999

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Patches & Fixes for CVE-2022-50999 (1)

Vendor Advisories for CVE-2022-50999 (1)

Other References for CVE-2022-50999 (1)

Same Patch Batch · sparklemotion · 2026-08-25 · 14 CVEs total

CVE-2024-58378 9.8 CRITICAL Nokogiri before 1.16.2 Use-After-Free via xmlTextReader
CVE-2022-51000 9.8 CRITICAL Nokogiri before 1.13.2 Multiple Vulnerabilities via libxml2 libxslt
CVE-2025-71407 9.8 CRITICAL Nokogiri before 1.18.3 Stack Buffer Overflow and Use-After-Free
CVE-2025-71406 7.8 HIGH Nokogiri before 1.18.4 Use-After-Free via libxslt
CVE-2023-54354 7.5 HIGH Nokogiri before 1.14.3 Null Pointer Dereference via libxml2
CVE-2026-79770 7.5 HIGH Nokogiri before 1.19.3 ReDoS via CSS selector tokenizer
CVE-2022-50998 7.5 HIGH Nokogiri before 1.13.9 Multiple Vulnerabilities via libxml2
CVE-2021-47996 7.5 HIGH Nokogiri before 1.11.4 Multiple Vulnerabilities via libxml2
CVE-2026-79769 5.5 MEDIUM Nokogiri before 1.19.4 Invalid Memory Read via initialize_copy_with_args
CVE-2026-79771 5.3 MEDIUM Nokogiri before 1.19.3 Memory Leak via XSLT Transform
CVE-2026-79772 5.3 MEDIUM Nokogiri before 1.19.1 Unchecked Return Value canonicalize
CVE-2025-71346 2.9 LOW Nokogiri before 1.18.8 Heap Buffer Under-read via XML Schema
CVE-2024-58377 Nokogiri before 1.16.5 libxml2 Dependency Update

IV. Related Vulnerabilities

Same product: nokogiri
Same vendor: sparklemotion
Same weakness: CWE-119

V. Comments for CVE-2022-50999

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