CVE catalog
CVE-2026-106452
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but a
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.45% · Oct 27, 2026
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but allocates a compressed-input buffer of that attacker-controlled size before reading payload data, allowing a header-only stream to request a near-2 GiB allocation and exhaust the JVM heap. Canonical writers emit raw blocks when compression is not smaller than the original block, but vulnerable readers accept non-canonical oversized compressed blocks. This issue is fixed in version 1.11.2.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | lz4-java | sid | 1.11.2+ds1-3 | fixed |
| Debian | lz4-java | forky | 1.11.2+ds1-3 | fixed |
| Debian | lz4-java | trixie | 1.8.0-4 | vulnerable |
| Debian | lz4-java | bookworm | 1.8.0-3 | vulnerable |
| Maven | at.yawk.lz4:lz4-java | Not reported | 1.11.2 | fixed |
| Maven | org.lz4:lz4-java | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lz4-java | source | sid | 1.11.2+ds1-1 | not yet assigned | Not reported | Not reported |
| Debian | lz4-java | source | forky | 1.11.2+ds1-1 | not yet assigned | Not reported | Not reported |
| Debian | lz4-java | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | lz4-java | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Maven | at.yawk.lz4:lz4-java | maven | Not reported | 1.11.2 | Not reported | GHSA-4V53-57PG-C464 | Not reported |
Notes
[bookworm] lz4-java: minor issue; DoS
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [liblz4-java]Affected
Source package: [lz4-java]
Details (2)
1.8.0-3· all · bookwormAffected
nvd · lz4-java · debian · bookworm; nvd · lz4-java · debian · 12
1.8.0-3· all · bookwormAffected
nvd · lz4-java · debian · bookworm; nvd · lz4-java · debian · 12
- [liblz4-jni]Affected
Source package: [lz4-java]
Details (2)
1.8.0-3· amd64 · bookwormAffected
nvd · lz4-java · debian · bookworm; nvd · lz4-java · debian · 12
1.8.0-3· arm64 · bookwormAffected
nvd · lz4-java · debian · bookworm; nvd · lz4-java · debian · 12
[Debian 13 (Trixie)]
- [liblz4-java]Affected
Source package: [lz4-java]
Details (2)
1.8.0-4· all · trixieAffected
nvd · lz4-java · debian · 13
1.8.0-4· all · trixieAffected
nvd · lz4-java · debian · 13
- [liblz4-jni]Affected
Source package: [lz4-java]
Details (2)
1.8.0-4· amd64 · trixieAffected
nvd · lz4-java · debian · 13
1.8.0-4+b1· arm64 · trixieAffected
nvd · lz4-java · debian · 13
Observed:
References
- [https://github.com/advisories/GHSA-4v53-57pg-c464]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-106452]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-106452]
- [https://security-tracker.debian.org/tracker/CVE-2026-106452]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106452.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]