5.3

CVE-2026-106450: yawkat lz4-java

CVSS: 5.3v3.1MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-106450DEBIAN-CVE-2026-106450CGA-254f-hwm4-pjcw
Published 06-10-2026Last modified 09-10-2026

Vulnerability summary

CVE-2026-106450 is a medium (CVSS 5.3) vulnerability in yawkat lz4-java. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.5% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.37%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 09-10-2026
    Last modifiedVulnerability information updated.

Description

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4FrameInputStream readHeader() allocates two new 4 MiB block buffers whenever a maximum-block-size frame header is read, and the default concatenated-frame mode allows attacker-controlled streams containing many minimal empty frames to trigger roughly 8 MiB of allocation for every 11 input bytes. The stream produces no decompressed output while consuming CPU and garbage-collection time, so decompressed-size limits do not mitigate the issue; readSingleFrame mode is not affected. This issue is fixed in version 1.11.4.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

07-10-202619-10-2026
EPSS score
0.37%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard164 products
  • akhq< 0.28.0-r14
  • apache-hop< 2.19.0-r7
  • apache-hop-fips< 2.19.0-r5
  • apache-nifi-2.11< 2.11.0-r11
  • apache-nifi-2.12< 2.12.0-r5
Wolfi36 products
  • akhq< 0.28.0-r14
  • apache-pulsar-4.2< 4.2.5-r1
  • cassandra-4.1All versions (No fix recorded) | < 4.1.12-r4
  • cassandra-5.0< 5.0.9-r12
  • cassandra-reaper< 5.0.1-r7

2 vendors · 200 products · Showing 200 of 206. Use Open JSON for the complete list.

References

9 links