5.3

CVE-2026-106453: yawkat lz4-java

CVSS: 5.3v3.1MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-106453DEBIAN-CVE-2026-106453CGA-237j-c3cc-ww9q
Published 06-10-2026Last modified 07-10-2026
Open JSON

Vulnerability summary

CVE-2026-106453 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. 07-10-2026
    Last modifiedVulnerability information updated.

Description

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, LZ4DecompressorWithLength uses getDecompressedLength to trust the four-byte decompressed-length header before validating the compressed input, allowing a five-byte attacker-supplied input whose header declares a large output size to request up to approximately 2 GiB and exhaust the JVM heap. Convenience overloads backed by LZ4FastDecompressor or LZ4SafeDecompressor allocate the untrusted size, while overloads that write to a caller-provided destination buffer are not affected because the caller controls the destination size. This issue is fixed in version 1.11.2.

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

Chainguard160 products
  • akhq< 0.28.0-r14
  • apache-hop-fips< 2.19.0-r5
  • apache-nifi-2.11< 2.11.0-r11
  • apache-nifi-2.12< 2.12.0-r5
  • apache-polaris< 1.8.0-r4
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-r11
  • cassandra-reaper< 5.0.1-r7
At.yawk.lz41 product
  • lz4-java< 1.11.2
Debian1 product
  • lz4-javaAll versions (No fix recorded) | < 1.11.2+ds1-1
Org.lz41 product
  • lz4-java≤ 1.8.1
Ubuntu1 product
  • lz4-javaAll versions (No fix recorded)

6 vendors · 200 products · Showing 200 of 201. Use Open JSON for the complete list.

References

9 links