Resource exhaustion in Nekohtml Project
CVE-2022-24839
org.cyberneko.html is an html parser written in Java. The fork of `org.cyberneko.html` used by Nokogiri (Rubygem) raises a `java.lang.OutOfMemoryError` exception when parsing ill-formed HTML markup. Users are advised to upgrade to `>= 1.9.22.noko2`. Note: The upstream library `org.cyberneko.html` is no longer maintained. Nokogiri uses its own fork of this library located at https://github.com/sparklemotion/nekohtml and this CVE applies only to that fork. Other forks of nekohtml may have a similar vulnerability.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.021 (79.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Nekohtml_project Nekohtml
- Oracle Weblogic_server — versions 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0
- Sparklemotion Nekohtml — versions < 1.9.22.noko2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-24839?
- CVE-2022-24839 is a high-severity vulnerability in Nekohtml Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-04-11.
- How severe is CVE-2022-24839?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-24839 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.