Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory (decompression bomb)

ImpactDenial of service via memory exhaustion. Affects all callers who streamed compressed responses relying on the chunk size — explicit iterbyteschunksize=... or the default — to bound memory. The decoder ignored that bound, so a chunk could be far larger than requested and a single compressed...

Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

ImpactWho is impacted: - Any application using Zapros to make HTTP requests to untrusted servers - Applications that follow redirects to attacker-controlled hostsAttack vector: - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, it...

PYSEC-2026-4182 Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory (decompression bomb)

Impact Denial of service via memory exhaustion. Affects all callers who streamed compressed responses relying on the chunk size — explicit iterbyteschunksize=... or the default — to bound memory. The decoder ignored that bound, so a chunk could be far larger than requested and a single compressed...

PYSEC-2026-4181 Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

Impact Who is impacted: - Any application using Zapros to make HTTP requests to untrusted servers - Applications that follow redirects to attacker-controlled hosts Attack vector: - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, ...

PT-2026-105924

Impact Denial of service via memory exhaustion. Affects all callers who streamed compressed responses relying on the chunk size — explicit iter byteschunk size=... or the default — to bound memory. The decoder ignored that bound, so a chunk could be far larger than requested and a single compress...

PT-2026-105923

Impact Who is impacted: - Any application using Zapros to make HTTP requests to untrusted servers - Applications that follow redirects to attacker-controlled hosts Attack vector: - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, ...

GHSA-5VJJ-2R48-Q622 Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

Impact Who is impacted: - Any application using Zapros to make HTTP requests to untrusted servers - Applications that follow redirects to attacker-controlled hosts Attack vector: - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, ...

EUVD-2026-84182

Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service...

Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

Impact Who is impacted: - Any application using Zapros to make HTTP requests to untrusted servers - Applications that follow redirects to attacker-controlled hosts Attack vector: - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, ...

Allocation of Resources Without Limits or Throttling

Overview zapros is a Modern and extensible HTTP client for Python. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via getcontentdecoder in src/zapros/models.py, where an attacker can send an HTTP response with an unbounded number of...

Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory (decompression bomb)

Impact Denial of service via memory exhaustion. Affects all callers who streamed compressed responses relying on the chunk size — explicit iterbyteschunksize=... or the default — to bound memory. The decoder ignored that bound, so a chunk could be far larger than requested and a single compressed...

EUVD-2026-84175

Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory decompression bomb...

GHSA-6CP7-3M3C-5X5C Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory (decompression bomb)

Impact Denial of service via memory exhaustion. Affects all callers who streamed compressed responses relying on the chunk size — explicit iterbyteschunksize=... or the default — to bound memory. The decoder ignored that bound, so a chunk could be far larger than requested and a single compressed...

Allocation of Resources Without Limits or Throttling

Overview zapros is a Modern and extensible HTTP client for Python. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via decompression of streaming responses in decoders.py, where compressed content gzip, deflate, or brotli is decompressed...

CVE-2026-61541

Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service when an application requests content from an untrusted server, or follows a redirect to one, because a malicious response containing an excessive number of chained Content-Encoding values causes Zapros to...

CVE-2026-61652

Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service via memory exhaustion. The issue affects all callers who streamed compressed responses relying on the chunk size — explicit iterbyteschunksize=... or the default — to bound memory. The decoder ignored that...

CVE-2026-61541 Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service when an application requests content from an untrusted server, or follows a redirect to one, because a malicious response containing an excessive number of chained Content-Encoding values causes Zapros to...

CVE-2026-61541 Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service when an application requests content from an untrusted server, or follows a redirect to one, because a malicious response containing an excessive number of chained Content-Encoding values causes Zapros to...

CVE-2026-61541

Zapros , a Python HTTP client, is vulnerable to denial of service in versions prior to 0.14.0 . The root cause is an unbounded chained Content-Encoding decompression chain : when an application requests content from an untrusted server (or follows a redirect to one), a malicious response containi...

CVE-2026-61541 Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service

Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service when an application requests content from an untrusted server, or follows a redirect to one, because a malicious response containing an excessive number of chained Content-Encoding values causes Zapros to...