In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2021-03-17T12:31:15

Updated: 2021-05-06T22:06:22

Reserved: 2021-02-16T00:00:00


Link: CVE-2021-27291

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2021-03-17T13:15:15.137

Modified: 2023-11-07T03:31:56.783


Link: CVE-2021-27291

JSON object: View

cve-icon Redhat Information

No data.

CWE