CVE•Published 2026-08-25•Modified 2026-09-01•0 articles on news•4 live references•NVD data

CVE-2026-79771Nokogiri · Nokogiri

Vulnerability data via NVD (ingested)

CVSS v3.1

5.3

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 77% of all CVEs

Weaknesses (CWE)

CWE-401Missing Release of Memory after Effective Lifetime

Description

Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings containing null bytes. Attackers can exploit this by passing attacker-controlled input with null bytes to transform parameters, causing heap allocations to leak and enabling denial of service against long-running processes.

Timeline

Published 2026-08-25

Modified 2026-09-01

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-79771

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Nokogiri Nokogiri"

All exposed Nokogiri Nokogiri instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Nokogiri"

HTTP body or banner mentions "Nokogiri" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-79771