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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.
| Reporter | Title | Published | Views | Family All 206 |
|---|---|---|---|---|
 | Security fix for the ALT Linux 9 package mediawiki version 1.35.2-alt1 | 24 Apr 202100:00 | – | altlinux |
 | Amazon Linux 2 : python3-pygments (ALAS-2023-2117) | 20 Jul 202300:00 | – | nessus |
| Amazon Linux 2 : python-pygments (ALAS-2023-2198) | 14 Aug 202300:00 | – | nessus |
| AlmaLinux 8 : resource-agents (ALSA-2021:4139) | 9 Feb 202200:00 | – | nessus |
| Azure Linux 3.0 Security Update: python-pygments (CVE-2021-27291) | 10 Feb 202500:00 | – | nessus |
| CentOS 8 : resource-agents (CESA-2021:4139) | 11 Nov 202100:00 | – | nessus |
| CentOS 8 : python36:3.6 (CESA-2021:4150) | 11 Nov 202100:00 | – | nessus |
| CentOS 8 : python27:2.7 (CESA-2021:4151) | 11 Nov 202100:00 | – | nessus |
| Debian DLA-2600-1 : pygments security update | 22 Mar 202100:00 | – | nessus |
| Debian DLA-2648-2 : mediawiki regression update | 7 May 202100:00 | – | nessus |
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18 Feb 2026 09:31Current
7High risk
Vulners AI Score7
CVSS 25
CVSS 3.17.5
EPSS0.034