NLTK: Missing Post-Download Integrity Verification Allows Malicious Package Injection

NLTK's package downloader in nltk/downloader.py does not verify file integrity after download and before extraction. The download flow at lines 789-825: 1. File is downloaded to a temp path via HTTP 2. os.replacetmpfilepath, filepath moves it to the final location line 799 3. Extraction begins vi...

GHSA-5WP5-5229-5G6Q NLTK: Missing Post-Download Integrity Verification Allows Malicious Package Injection

NLTK's package downloader in nltk/downloader.py does not verify file integrity after download and before extraction. The download flow at lines 789-825: 1. File is downloaded to a temp path via HTTP 2. os.replacetmpfilepath, filepath moves it to the final location line 799 3. Extraction begins vi...

Duplicate Advisory: NLTK: Missing Post-Download Integrity Verification Allows Malicious Package Injection

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-5wp5-5229-5g6q. This link is maintained to preserve external references. Original Description NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader...

GHSA-GF32-CMJH-8M9V Duplicate Advisory: NLTK: Missing Post-Download Integrity Verification Allows Malicious Package Injection

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-5wp5-5229-5g6q. This link is maintained to preserve external references. Original Description NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader...

CVE-2026-63310

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority...

CVE-2026-63310

CVE-2026-63310 (now rejected by its CNA) tracks a vulnerability in NLTK before 3.9.3 where the package downloader in nltk/downloader.py performs no integrity verification between moving a downloaded file to its final location and extracting it. The SHA-256 checksum logic exists in _pkg_status() b...

PT-2026-79561

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.9.3 Description The downloader module fails to verify file integrity after downloading packages and before extraction. This allows attackers to use man-in-the-middle attacks or DNS poisoning to inject malicious package...

GO-2026-6223 vulnerabilities

Vulnerabilities for packages: kubeflow-pipelines...

Security update for gleam (moderate)

openSUSE security update: security update for gleam ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21557-1 Rating: moderate References: bsc1272992 Cross-References: CVE-2026-59247 Affected Products: openSUSE Leap 16.0...

Duplicate Advisory: NLTK: Missing Post-Download Integrity Verification Allows Malicious Package Injection

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-5wp5-5229-5g6q. This link is maintained to preserve external references. Original Description In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to dis...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...