CVE-2022-50999

high

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.

References

Advisories
More

https://www.vulncheck.com/advisories/nokogiri-before-integer-overflow-via-libxml2

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-cgx6-hpwq-fhv5

https://github.com/GNOME/libxml2/commit/2554a24

Details

Source: Mitre, NVD

Published: 2026-08-25

Updated: 2026-09-01

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C

Severity: High

CVSS v3

Base Score: 8.6

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

Severity: High

CVSS v4

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.00301