| Package | Affected versions | Patched versions |
|---|---|---|
| pygments | ≥ 1.1, < 2.7.4 | 2.7.4 |
| pygments | ≥ 1.1, < 2.7.4 | 2.7.4 |
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.
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