CVE-2026-79771Nokogiri before 1.19.3 Memory Leak via XSLT Transform
Updated under an hour ago ()
Does this affect you?
It affects sparklemotion nokogiri and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-401
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sparklemotion nokogiri sparklemotion:nokogiri (from the name) | before 1.19.3; 1.19.3 not affected | CNA record |
nokogiri nokogiri nokogiri:nokogiri | before 1.19.3 | NVD |
References
- https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v2fc-qm4h-8hqvvendor-advisory
- https://www.vulncheck.com/advisories/nokogiri-before-memory-leak-via-xslt-transformthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.