EUVD-2026-67072

NLTK: Quadratic-time DoS in PorterStemmer via long runs of 'y'...

CVE-2026-81722

nltk PorterStemmer in versions = 3.10.2 fixed in 3.10.3 contains an inefficient-algorithmic-complexity denial of service in PorterStemmer.stem. The isconsonant helper walks backward over the entire run of trailing 'y' characters on every call, and measure invokes it for each stem position, causin...

PYSEC-2026-3738

nltk PorterStemmer in versions = 3.10.2 fixed in 3.10.3 contains an inefficient-algorithmic-complexity denial of service in PorterStemmer.stem. The isconsonant helper walks backward over the entire run of trailing 'y' characters on every call, and measure invokes it for each stem position, causin...

CVE-2026-81722

nltk PorterStemmer in versions = 3.10.2 fixed in 3.10.3 contains an inefficient-algorithmic-complexity denial of service in PorterStemmer.stem. The isconsonant helper walks backward over the entire run of trailing 'y' characters on every call, and measure invokes it for each stem position, causin...

PT-2026-82617

Name of the Vulnerable Software and Affected Versions nltk PorterStemmer versions prior to 3.10.3 Description The PorterStemmer contains an inefficient-algorithmic-complexity issue that can lead to a denial of service. The is consonant helper function walks backward over trailing 'y' characters o...

Linux Distros Unpatched Vulnerability : CVE-2026-81722

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nltk PorterStemmer in versions = 3.10.2 fixed in 3.10.3 contains an inefficient-algorithmic-complexity denial of service in PorterStemmer.stem. The isconsonant...