Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-37136

CVE-2021-37136HIGH

The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the alloc…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0591   93.1     —

AFFECTED
  Product  Versions       Fixed
  Netty    unspecified –  —

TIMELINE
  Jul 20  Reserved by JFROG
  Oct 19  Published (CNA: JFROG)
  Oct 8   ENRICHED — CVE-2021-37136 (The Netty project Netty). Received CVSS 7.5 and CPE data from NVD.

CWE-400 · CNA: JFROG · CVSS v3.1 · 13 references · NVD status: Modified

Description

The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 20, 2021	Reserved	Reserved by JFROG
October 19, 2021	Published	Published (CNA: JFROG)
October 8, 2026	ENRICHED	ENRICHED — CVE-2021-37136 (The Netty project Netty). Received CVSS 7.5 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
The Netty project	Netty	—	unspecified	—

Weaknesses

CWE-400

References (13)

https://github.com/netty/netty/security/advisories/GHSA-grg4-wf29-r9vv [Third Party Advisory]
https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e%40%3Cdev.tinkerpop.apache.org%3E
https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html [Mailing List, Third Party Advisory]
https://security.netapp.com/advisory/ntap-20220210-0012/ [Third Party Advisory]
https://www.debian.org/security/2023/dsa-5316 [Third Party Advisory]
https://www.oracle.com/security-alerts/cpuapr2022.html [Patch, Third Party Advisory]
https://www.oracle.com/security-alerts/cpujan2022.html [Patch, Third Party Advisory]
https://www.oracle.com/security-alerts/cpujul2022.html [Patch, Third Party Advisory]

Authoritative record: CVE-2021-37136 at cve.org

Vendors: the netty project

Weaknesses: CWE-400

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-37136 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.