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| purl | pkg:deb/debian/pygments@2.3.1%2Bdfsg-1%2Bdeb10u2 |
| Next non-vulnerable version | 2.18.0+dfsg-2 |
| Latest non-vulnerable version | 2.18.0+dfsg-2 |
| Risk | 4.0 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-gkzq-thjf-z7fa
Aliases: CVE-2021-20270 GHSA-9w8r-397f-prfh PYSEC-2021-140 |
An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword. |
Affected by 1 other vulnerability. |
|
VCID-p93c-damj-kbec
Aliases: CVE-2021-27291 GHSA-pq64-v7f5-gqh8 PYSEC-2021-141 |
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. |
Affected by 1 other vulnerability. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-gkzq-thjf-z7fa | An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword. |
CVE-2021-20270
GHSA-9w8r-397f-prfh PYSEC-2021-140 |
| VCID-p93c-damj-kbec | 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. |
CVE-2021-27291
GHSA-pq64-v7f5-gqh8 PYSEC-2021-141 |
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2025-08-01T17:00:59.306467+00:00 | Debian Oval Importer | Affected by | VCID-p93c-damj-kbec | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 37.0.0 |
| 2025-08-01T14:56:16.526684+00:00 | Debian Oval Importer | Affected by | VCID-gkzq-thjf-z7fa | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 37.0.0 |
| 2025-08-01T11:27:15.044336+00:00 | Debian Oval Importer | Fixing | VCID-gkzq-thjf-z7fa | https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 | 37.0.0 |
| 2025-08-01T11:12:08.088503+00:00 | Debian Oval Importer | Fixing | VCID-p93c-damj-kbec | https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 | 37.0.0 |