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Malicious code in reqcrypt (PyPI)

0
Critical
Published: 08/18/2026 (08/18/2026, 22:01:25 UTC)
Source: GCVE Database
Product: reqcrypt

Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (152e5cdb52328dccd4eb61462c930b56f456dbdf759f0ce3005da3a7ecf4b688) reqcrypt presents itself as a general-purpose HTTP client, but its internal PayloadProcessor unconditionally inspects every HTTP response for JSON keys named 'payloaddd', 'payload_gz', and 'payload_zlib', base64/gzip/zlib-decodes the associated values, and passes the decoded bytes to exec() inside the caller's Python process. This decode-and-exec path is wired into _process_response, which is invoked from every public verb (get/post/put/delete/patch/download/upload), so any server the caller contacts—or any network attacker able to tamper with a response—can push arbitrary Python code into the caller's process by adding one of those keys to a JSON body. In-source comments label the sinks as 'Hidden execution', and the behavior is not disclosed in the package's advertised API. Effect on any program using this library is a remote code execution channel driven by attacker-controlled or attacker-influenced HTTP responses. ## Source: kam193 (556f2178ed2505024fd91bc1c9c20b59d78783c27badd166a220493e5184fb39) The package contains a hidden backdoor. The promised functionality is an HTTP request library with some additional functions. On every usage, code secretly checks for the presence of specific fields in the response, and if they are found, their content is secretly executed. --- Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-08-reqcrypt Reasons (based on the campaign): - backdoor

Affected software

PyPIghsa
reqcrypt
Affected versions
=0.1.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/19/2026, 00:51:21 UTC

Technical Analysis

reqcrypt is a Python HTTP client library that unconditionally inspects every HTTP response for JSON keys named 'payloaddd', 'payload_gz', and 'payload_zlib'. It base64/gzip/zlib-decodes the associated values and executes the resulting code via exec() in the caller's process. This hidden backdoor is triggered on every HTTP verb method (get/post/put/delete/patch/download/upload), enabling remote code execution from attacker-controlled or attacker-influenced HTTP responses. The malicious behavior is undocumented and embedded in the package, representing a severe security risk.

Potential Impact

Any program using reqcrypt version 0.1.0 is vulnerable to remote code execution through attacker-controlled HTTP responses. This allows an attacker to execute arbitrary Python code within the context of the calling process, potentially leading to full system compromise or data theft.

Mitigation Recommendations

No official patch or remediation is currently available. Users should immediately stop using reqcrypt version 0.1.0 and remove it from their environments. Avoid using this package until a trustworthy, clean version is released or an official advisory provides remediation guidance.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-14133
Osv Schema Version
1.7.4
Ecosystems
["PyPI"]

Threat ID: 6a84fa65c6e8be0332ef1301

Added to database: 08/19/2026, 00:35:49 UTC

Last enriched: 08/19/2026, 00:51:21 UTC

Last updated: 10/01/2026, 10:14:37 UTC

Views: 39

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