high CVSS 7.5

CVE-2026-41608·Python vulnerability

Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Apache Thrift Python bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue.

Severity
high
Software
Python
Fixed in
0.24.0
Published
2026-07-27

Affected versions

Until: 0.24.0

Fixed in: 0.24.0

How to fix this CVE

Update Apache Thrift Python bindings to version 0.24.0 or later to resolve a data amplification vulnerability affecting compressed data handling. This fix prevents denial-of-service conditions triggered by malformed compressed payloads that could consume excessive system resources. Apply this update across all Python environments that depend on Thrift for RPC communication.

sudo dnf update python3-thrift

Defensia detects this vulnerability

How to check if you are affected

  1. Step 1: Check installed Thrift version with `python3 -c "import thrift; print(thrift.__version__)"` — versions before 0.24.0 are vulnerable
  2. Step 2: Identify Thrift exposure by running `python3 -m pip show thrift` to confirm the package is installed and check its version
  3. Step 3: Review application logs for sudden memory spikes or CPU usage near Thrift service startup, particularly if handling remote RPC calls with compressed data
  4. Step 4: Verify the fix by re-running the version check and confirming the output shows 0.24.0 or a later version

FAQ

What is CVE-2026-41608?

This is a data amplification vulnerability in Apache Thrift's Python bindings where specially crafted highly compressed data can be decompressed into massive payloads, exhausting memory and CPU resources and causing denial-of-service conditions.

Is CVE-2026-41608 being actively exploited?

No, this vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities catalog and no public exploits are available, though organizations should still prioritize patching to prevent future exploitation.

What versions of Python are affected by CVE-2026-41608?

This affects Apache Thrift for Python versions before 0.24.0; the exact oldest vulnerable version is unknown, so all Python Thrift installations below 0.24.0 should be considered at risk.

How do I check if my server is vulnerable to CVE-2026-41608?

Run `python3 -m pip show thrift | grep Version` to display the installed version; if it is lower than 0.24.0, your server is vulnerable.

Does Defensia detect CVE-2026-41608?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Apache Thrift Python bindings are installed on a monitored server, CVE-2026-41608 will appear in your dashboard with remediation steps.

Related Python CVEs

CVE-2026-28505CVSS 10Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the str_eval() function in notification_handler.py implements a sandboxed eval() for notification text templates. The sandbox attempts to restrict callable names by inspecting code.co_names of the compiled code object. However, co_names only contains names from the outer code object. When a lambda expression is used, it creates a nested code object whose attribute accesses are stored in code.co_consts, NOT in code.co_names. The sandbox never inspects nested code objects. This issue has been patched in version 2.17.0.
CVE-2026-34938CVSS 10PraisonAI is a multi-agent teams system. Prior to version 1.5.90, execute_code() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the _safe_getattr wrapper, achieving arbitrary OS command execution on the host. This issue has been patched in version 1.5.90.
CVE-2026-33054CVSS 10Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted state_token through the UI stream payload to arbitrarily target files on the disk under the standard file-based runtime backend. This can result in application denial of service (via crash loops when reading non-msgpack target files as configurations), or arbitrary file manipulation. This vulnerability heavily exposes systems hosted utilizing FileStateSessionBackend. Unauthorized malicious actors could interact with arbitrary payloads overwriting or explicitly removing underlying service resources natively outside the application bounds. This issue has been fixed in version 1.2.3.
CVE-2026-25632CVSS 10EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water distribution networks. Prior to 0.16.1, EPyT-Flow’s REST API parses attacker-controlled JSON request bodies using a custom deserializer (my_load_from_json) that supports a type field. When type is present, the deserializer dynamically imports an attacker-specified module/class and instantiates it with attacker-supplied arguments. This allows invoking dangerous classes such as subprocess.Popen, which can lead to OS command execution during JSON parsing. This also affects the loading of JSON files. This vulnerability is fixed in 0.16.1.
CVE-2026-25115CVSS 9.9n8n is an open source workflow automation platform. Prior to version 2.4.8, a vulnerability in the Python Code node allows authenticated users to break out of the Python sandbox environment and execute code outside the intended security boundary. This issue has been patched in version 2.4.8.

References

Track CVEs across your fleet automatically

Defensia scans your Linux servers and tells you exactly which ones are running vulnerable versions — including CVE-2026-41608. Free for 1 server.

Get started free