CVE-2026-49855

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, Tornado gzip decompression routines processed limited-size chunks but did not enforce an overall limit on accumulated decompressed chunks, allowing a malicious server accessed by SimpleAsyncHTTPClient or an...

PYSEC-2026-2776 Open Babel has out-of-bounds write (overlapping memcpy) in zipstream basic_unzip_streambuf::underflow

Summary A memory-safety vulnerability in Open Babel's bundled zipstream decompression code caused an out-of-bounds write via overlapping memcpy when reading a crafted gzip-compressed chemistry file. Details The flaw was in basicunzipstreambuf::underflow. The decompression buffer refill path invok...

PYSEC-2026-3389 tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)

Tornado's gzip decompression routines work in limited-size chunks, but have no overall limit for the total size of decompressed chunks that they will accumulate There has always been a limit for the total compressed size. This allows a malicious server to consume effectively unlimited amounts of...

SUSE CVE-2026-59939

httplib2 is a comprehensive HTTP client library for Python. Prior to 0.32.0, httplib2 performs unbounded decompression of HTTP response bodies encoded with Content-Encoding: gzip or deflate in decompressContent in httplib2/init.py, allowing a malicious or compromised HTTP server to return a small...

CVE-2026-44160 Fluentd: Denial of Service (DoS) via Gzip Decompression Bomb in `in_http` and `in_forward`

Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd's inhttp and inforward plugins support gzip-compressed data but enforce limits only on compressed payloads through settings such as bodysizelimit and...

CVE-2026-59803

rpcx through 1.9.3, fixed in commit 047aec1, contains a denial-of-service vulnerability in protocol.Message.Decode protocol/message.go. When a message has the compression flag set, the payload is gzip-decompressed via util.Unzip with no limit on the decompressed output size. The only built-in siz...

CVE-2026-59803 rpcx - Denial of Service via Gzip Decompression Bomb in Wire Protocol

rpcx through 1.9.3, fixed in commit 047aec1, contains a denial-of-service vulnerability in protocol.Message.Decode protocol/message.go. When a message has the compression flag set, the payload is gzip-decompressed via util.Unzip with no limit on the decompressed output size. The only built-in siz...

EUVD-2026-42372

rpcx through 1.9.3, fixed in commit 047aec1, contains a denial-of-service vulnerability in protocol.Message.Decode protocol/message.go. When a message has the compression flag set, the payload is gzip-decompressed via util.Unzip with no limit on the decompressed output size. The only built-in siz...

CVE-2026-59803

rpcx through 1.9.3, fixed in commit 047aec1, contains a denial-of-service vulnerability in protocol.Message.Decode protocol/message.go. When a message has the compression flag set, the payload is gzip-decompressed via util.Unzip with no limit on the decompressed output size. The only built-in siz...

CVE-2026-59803 rpcx - Denial of Service via Gzip Decompression Bomb in Wire Protocol

rpcx through 1.9.3, fixed in commit 047aec1, contains a denial-of-service vulnerability in protocol.Message.Decode protocol/message.go. When a message has the compression flag set, the payload is gzip-decompressed via util.Unzip with no limit on the decompressed output size. The only built-in siz...

CVE-2026-59939 httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling

httplib2 is a comprehensive HTTP client library for Python. Prior to 0.32.0, httplib2 performs unbounded decompression of HTTP response bodies encoded with Content-Encoding: gzip or deflate in decompressContent in httplib2/init.py, allowing a malicious or compromised HTTP server to return a small...

GO-2026-5778 Rekor has an OOM Condition due to Unbounded gzip Decompression in Alpine APK Parsing Logic in github.com/sigstore/rekor

Rekor has an OOM Condition due to Unbounded gzip Decompression in Alpine APK Parsing Logic in github.com/sigstore/rekor...

GHSA-J9CW-HWQF-85W7 Fluentd is Vulnerable to Denial of Service (DoS) via Gzip Decompression Bomb in `in_http` and `in_forward`

Fluentd's inhttp and inforward plugins support receiving gzip-compressed data. While Fluentd correctly enforces size limits on the incoming compressed payloads e.g., via bodysizelimit or chunksizelimit, it was discovered that there is no limit enforced on the size of the decompressed data. If a...

PT-2026-53004

Name of the Vulnerable Software and Affected Versions Fluentd versions prior to 1.19.3 Description The in http and in forward plugins support gzip-compressed data but only enforce size limits on the compressed payloads via settings like body size limit and chunk size limit. Because no limit is...

OESA-2026-2728 python-tornado security update

Tornado is an open source version of the scalable, non-blocking web server and tools. Security Fixes: When SimpleAsyncHTTPClient follows a 3xx redirect, it shallow-copies the original HTTPRequest, rewrites the URL, decrements maxredirects, and removes only the Host header. It does not clear...

OESA-2026-2727 python-tornado security update

Tornado is an open source version of the scalable, non-blocking web server and tools. Security Fixes: When SimpleAsyncHTTPClient follows a 3xx redirect, it shallow-copies the original HTTPRequest, rewrites the URL, decrements maxredirects, and removes only the Host header. It does not clear...

GHSA-8823-QG2X-PV9F Ultimate Sitemap Parser (USP): Gzip Decompression Bomb Bypasses Sitemap Size Limit

Gzip Decompression Bomb Bypasses Sitemap Size Limit Summary ultimate-sitemap-parser enforces a 100 MiB size limit on sitemap responses, but applies it only to the compressed bytes received over the network. When a .gz sitemap is fetched, usp/helpers.py:239 calls gziplib.decompressdata with no...

Python Library Tornado < 6.5.6 Multiple Vulnerabilities

The version of the Tornado Python library installed on the remote host is prior to 6.5.6. It is, therefore, affected by multiple vulnerabilities: - When SimpleAsyncHTTPClient follows a 3xx redirect, it shallow-copies the original HTTPRequest, rewrites the URL, decrements maxredirects, and removes...

GO-2026-5041 CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression in github.com/crowdsecurity/crowdsec

CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression in github.com/crowdsecurity/crowdsec...

CVE-2026-53430

Improper Handling of Highly Compressed Data Data Amplification vulnerability in elixir-grpc grpc GRPC.Compressor.Gzip, GRPC.Message modules allows a denial of service via a gzip decompression bomb. This vulnerability is associated with program files lib/grpc/compressor/gzip.ex, lib/grpc/message.e...