All vulnerabilities

Servers and applications

CVE-2023-26464

** UNSUPPORTED WHEN ASSIGNED ** When using the Chainsaw or SocketAppender components with Log4j 1.x on JRE less than 1.7, an attacker that manages to cause a logging entry involving a specially-crafted (ie, deeply nested) hashmap or hashtable (depending on which logging component is in use) to be processed could exhaust the available memory in the virtual machine and achieve Denial of Service…

Severity
High 7.5
Published
10 Mar 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.0
Sources
NVD

Affected software

SoftwareAffected versions
Apache Log4jServers and applications · cpe:a:apache:log4j
  • From 1.0.4 before 2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-26464
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-26464