CVE catalog
CVE-2026-106449
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursi
- Severity
- Low · CVSS 3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.42% · Oct 25, 2026
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill(), allowing a long sequence of empty blocks in an attacker-controlled compressed stream to exhaust the decoding thread's stack and throw StackOverflowError. The default stopOnEmptyBlock setting is true and is not affected, and the issue does not cause memory corruption. This issue is fixed in version 1.11.4.
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 | vulnerable |
| Debian | lz4-java | forky | 1.11.2+ds1-3 | vulnerable |
| 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 | 1.11.4 | 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 | (unfixed) | not yet assigned | Not reported | [1150247] |
| Debian | lz4-java | source | forky | (unfixed) | not yet assigned | Not reported | [1150247] |
| Debian | lz4-java | source | trixie | (unfixed) | not yet assigned | Not reported | [1150247] |
| Debian | lz4-java | source | bookworm | (unfixed) | not yet assigned | Not reported | [1150247] |
| Maven | at.yawk.lz4:lz4-java | maven | Not reported | 1.11.4 | Not reported | GHSA-343H-94H5-C4WR | Not reported |
Notes
[bookworm] lz4-java: minor issue
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-343h-94h5-c4wr]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-106449]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-106449]
- [https://security-tracker.debian.org/tracker/CVE-2026-106449]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106449.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4013.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]