https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 10:00:37 +0000 https://cve.radiocsirt.org/vuln/brew-acronym-cve-2026-33236 <p><strong>Affected:</strong> Homebrew: acronym</p> <p>## Vulnerability Description</p> <p>The NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to:</p> <p>1. **Arbitrary Directory Creation**: Create directories at arbitrary locations in the file system 2. **Arbitrary File Creation**: Create arbitrary files 3. **Arbitrary File Overwrite**: Overwrite critical system files (such as `/etc/passwd`, `~/.ssh/authorized_keys`, etc.)</p> <p>## Vulnerability Principle</p> <p>### Key Code Locations</p> <p>**1. XML Parsing Without Validation** (`nltk/downloader.py:253`) ```python self.filename = os.path.join(subdir, id + ext) ``` - `subdir` and `id` are directly from XML attributes without any validation</p> <p>**2. Path Construction Without Checks** (`nltk/downloader.py:679`) ```python filepath = os.path.join(download_dir, info.filename) ``` - Directly uses `filename` which may contain path traversal</p> <p>**3. Unrestricted Directory Creation** (`nltk/downloader.py:687`) ```python os.makedirs(os.path.join(download_dir, info.subdir), exist_ok=True) ``` - Can create arbitrary directories outside the download directory</p> <p>**4. File Writing Without Protection** (`nltk/downloader.py:695`) ```python with open(filepath, &#34;wb&#34;) as outfile: ``` - Can write to arbitrary locations in the file system</p> <p>### Attack Chain</p> <p>``` 1. Attacker controls remote XML index server ↓ 2. Provides malicious XM…</p> <p><strong>Affected:</strong> Homebrew: acronym</p> <p>## Vulnerability Description</p> <p>The NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to:</p> <p>1. **Arbitrary Directory Creation**: Create directories at arbitrary locations in the file system 2. **Arbitrary File Creation**: Create arbitrary files 3. **Arbitrary File Overwrite**: Overwrite critical system files (such as `/etc/passwd`, `~/.ssh/authorized_keys`, etc.)</p> <p>## Vulnerability Principle</p> <p>### Key Code Locations</p> <p>**1. XML Parsing Without Validation** (`nltk/downloader.py:253`) ```python self.filename = os.path.join(subdir, id + ext) ``` - `subdir` and `id` are directly from XML attributes without any validation</p> <p>**2. Path Construction Without Checks** (`nltk/downloader.py:679`) ```python filepath = os.path.join(download_dir, info.filename) ``` - Directly uses `filename` which may contain path traversal</p> <p>**3. Unrestricted Directory Creation** (`nltk/downloader.py:687`) ```python os.makedirs(os.path.join(download_dir, info.subdir), exist_ok=True) ``` - Can create arbitrary directories outside the download directory</p> <p>**4. File Writing Without Protection** (`nltk/downloader.py:695`) ```python with open(filepath, &#34;wb&#34;) as outfile: ``` - Can write to arbitrary locations in the file system</p> <p>### Attack Chain</p> <p>``` 1. Attacker controls remote XML index server ↓ 2. Provides malicious XM…</p> https://cve.radiocsirt.org/vuln/brew-acronym-cve-2026-33236 https://cve.radiocsirt.org/vuln/certfr-2026-avi-0556 certfr-2026-avi-0556 https://cve.radiocsirt.org/vuln/certfr-2026-avi-0556 https://cve.radiocsirt.org/vuln/euvd-2026-339113 EUVD-2026-339113 https://cve.radiocsirt.org/vuln/euvd-2026-339113 https://cve.radiocsirt.org/vuln/fkie_cve-2026-33236 <p>NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.</p> <p>NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-33236 https://cve.radiocsirt.org/vuln/ghsa-469j-vmhf-r6v7 <p><strong>Affected:</strong> PyPI: nltk</p> <p>## Vulnerability Description</p> <p>The NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to:</p> <p>1. **Arbitrary Directory Creation**: Create directories at arbitrary locations in the file system 2. **Arbitrary File Creation**: Create arbitrary files 3. **Arbitrary File Overwrite**: Overwrite critical system files (such as `/etc/passwd`, `~/.ssh/authorized_keys`, etc.)</p> <p>## Vulnerability Principle</p> <p>### Key Code Locations</p> <p>**1. XML Parsing Without Validation** (`nltk/downloader.py:253`) ```python self.filename = os.path.join(subdir, id + ext) ``` - `subdir` and `id` are directly from XML attributes without any validation</p> <p>**2. Path Construction Without Checks** (`nltk/downloader.py:679`) ```python filepath = os.path.join(download_dir, info.filename) ``` - Directly uses `filename` which may contain path traversal</p> <p>**3. Unrestricted Directory Creation** (`nltk/downloader.py:687`) ```python os.makedirs(os.path.join(download_dir, info.subdir), exist_ok=True) ``` - Can create arbitrary directories outside the download directory</p> <p>**4. File Writing Without Protection** (`nltk/downloader.py:695`) ```python with open(filepath, &#34;wb&#34;) as outfile: ``` - Can write to arbitrary locations in the file system</p> <p>### Attack Chain</p> <p>``` 1. Attacker controls remote XML index server ↓ 2. Provides malicious XM…</p> <p><strong>Affected:</strong> PyPI: nltk</p> <p>## Vulnerability Description</p> <p>The NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to:</p> <p>1. **Arbitrary Directory Creation**: Create directories at arbitrary locations in the file system 2. **Arbitrary File Creation**: Create arbitrary files 3. **Arbitrary File Overwrite**: Overwrite critical system files (such as `/etc/passwd`, `~/.ssh/authorized_keys`, etc.)</p> <p>## Vulnerability Principle</p> <p>### Key Code Locations</p> <p>**1. XML Parsing Without Validation** (`nltk/downloader.py:253`) ```python self.filename = os.path.join(subdir, id + ext) ``` - `subdir` and `id` are directly from XML attributes without any validation</p> <p>**2. Path Construction Without Checks** (`nltk/downloader.py:679`) ```python filepath = os.path.join(download_dir, info.filename) ``` - Directly uses `filename` which may contain path traversal</p> <p>**3. Unrestricted Directory Creation** (`nltk/downloader.py:687`) ```python os.makedirs(os.path.join(download_dir, info.subdir), exist_ok=True) ``` - Can create arbitrary directories outside the download directory</p> <p>**4. File Writing Without Protection** (`nltk/downloader.py:695`) ```python with open(filepath, &#34;wb&#34;) as outfile: ``` - Can write to arbitrary locations in the file system</p> <p>### Attack Chain</p> <p>``` 1. Attacker controls remote XML index server ↓ 2. Provides malicious XM…</p> https://cve.radiocsirt.org/vuln/ghsa-469j-vmhf-r6v7 https://cve.radiocsirt.org/vuln/pysec-2026-2237 <p><strong>Affected:</strong> PyPI: nltk</p> <p>NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.</p> <p><strong>Affected:</strong> PyPI: nltk</p> <p>NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.</p> https://cve.radiocsirt.org/vuln/pysec-2026-2237 https://cve.radiocsirt.org/vuln/rhsa-2026:10184 <p>vllm: Server Side request forgery (SSRF) in MediaConnector feast: Feast: Remote Code Execution via insecure YAML deserialization openshift-ai: Trusty AI Grants All Authenticated users to list pods in any namespace nltk: Zip Slip Vulnerability in nltk Leading to Code Execution golang: net/url: Memory exhaustion in query parameter parsing in net/url golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion urllib3: urllib3 Streaming API improperly handles highly compressed data cbor2: cbor2: Information Disclosure via shared memory in CBORDecoder reuse aiohttp: AIOHTTP&#39;s HTTP Parser auto_decompress feature is vulnerable to zip bomb aiohttp: aiohttp: Denial of Service via specially crafted POST request aiohttp: aiohttp: Denial of Service via memory exhaustion from crafted POST request python-markdown: denial of service via malformed HTML-like sequences nltk: NLTK: Arbitrary file read via improper path validation in `filestring()` function nltk: NLTK: Arbitrary file read via path traversal vulnerability io.vertx/vertx-core: static handler component cache can be manipulated to deny the access to static files google-cloud-aiplatform: google-cloud-aiplatform: Arbitrary code execution via Stored Cross-Site Scripting (XSS) tensorflow: TensorFlow: Local privilege escalation via…</p> <p>vllm: Server Side request forgery (SSRF) in MediaConnector feast: Feast: Remote Code Execution via insecure YAML deserialization openshift-ai: Trusty AI Grants All Authenticated users to list pods in any namespace nltk: Zip Slip Vulnerability in nltk Leading to Code Execution golang: net/url: Memory exhaustion in query parameter parsing in net/url golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion urllib3: urllib3 Streaming API improperly handles highly compressed data cbor2: cbor2: Information Disclosure via shared memory in CBORDecoder reuse aiohttp: AIOHTTP&#39;s HTTP Parser auto_decompress feature is vulnerable to zip bomb aiohttp: aiohttp: Denial of Service via specially crafted POST request aiohttp: aiohttp: Denial of Service via memory exhaustion from crafted POST request python-markdown: denial of service via malformed HTML-like sequences nltk: NLTK: Arbitrary file read via improper path validation in `filestring()` function nltk: NLTK: Arbitrary file read via path traversal vulnerability io.vertx/vertx-core: static handler component cache can be manipulated to deny the access to static files google-cloud-aiplatform: google-cloud-aiplatform: Arbitrary code execution via Stored Cross-Site Scripting (XSS) tensorflow: TensorFlow: Local privilege escalation via…</p> https://cve.radiocsirt.org/vuln/rhsa-2026:10184 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-33236 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: nltk, Ubuntu:Pro:16.04:LTS: nltk, Ubuntu:Pro:18.04:LTS: nltk, Ubuntu:Pro:20.04:LTS: nltk, Ubuntu:Pro:22.04:LTS: nltk, Ubuntu:Pro:24.04:LTS: nltk, Ubuntu:25.10: nltk, Ubuntu:Pro:26.04:LTS: nltk</p> <p>NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: nltk, Ubuntu:Pro:16.04:LTS: nltk, Ubuntu:Pro:18.04:LTS: nltk, Ubuntu:Pro:20.04:LTS: nltk, Ubuntu:Pro:22.04:LTS: nltk, Ubuntu:Pro:24.04:LTS: nltk, Ubuntu:25.10: nltk, Ubuntu:Pro:26.04:LTS: nltk</p> <p>NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-33236 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-0895 <p>Ein Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise ausnutzen, um Dateien zu manipulieren, um einen Denial of Service Angriff durchzuführen, um beliebigen Programmcode auszuführen, und um einen Cross-Site Scripting Angriff durchzuführen.</p> <p>Ein Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise ausnutzen, um Dateien zu manipulieren, um einen Denial of Service Angriff durchzuführen, um beliebigen Programmcode auszuführen, und um einen Cross-Site Scripting Angriff durchzuführen.</p> https://cve.radiocsirt.org/vuln/wid-sec-w-2026-0895