https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-04T16:57:22.697770+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2021-3828 CVE-2021-3828 — Inefficient Regular Expression Complexity in nltk/nltk 2026-10-04T16:57:22.734953+00:00

Affected: nltk/nltk

nltk is vulnerable to Inefficient Regular Expression Complexity

 https://vulnerability.circl.lu/vuln/ghsa-2ww3-fxvq-293j GHSA-2ww3-fxvq-293j — NLTK Vulnerable to REDoS 2026-10-04T16:57:22.735033+00:00

Affected: PyPI: nltk

The nltk package is vulnerable to ReDoS (regular expression denial of service). An attacker that is able to provide as an input to the [`_read_comparison_block()`(https://github.com/nltk/nltk/blob/23f4b1c4b4006b0cb3ec278e801029557cec4e82/nltk/corpus/reader/comparative_sents.py#L259) function in the file `nltk/corpus/reader/comparative_sents.py` may cause an application to consume an excessive amount of CPU.

 https://vulnerability.circl.lu/vuln/pysec-2021-356 PYSEC-2021-356 2026-10-04T16:57:22.735067+00:00

Affected: PyPI: nltk

nltk is vulnerable to Inefficient Regular Expression Complexity