CVE-2026-4539
pygments archetype.py AdlLexer redos
En bref Sévérité MEDIUM 4.8 EPSS EPSS 0.16 % · centile 5 (2026-10-27) État PUBLISHED Publiée 2026-03-22 Mise à jour 2026-03-23 Attribuée par VulDB Statut NVD Deferred Description A security flaw has been discovered in pygments up to 2.19.2. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Scores Version Score Vecteur Évalué par CVSS 4.0 MEDIUM 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P VulDB CVSS 3.1 LOW 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R VulDB CVSS 3.0 LOW 3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R VulDB CVSS 2.0 LOW 1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR VulDB CVSS 4.0 LOW 1.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X NVD · cna@vuldb.com (Secondary) CVSS 3.1 LOW 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L NVD · cna@vuldb.com (Secondary) CVSS 2.0 LOW 1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P NVD · cna@vuldb.com (Secondary)
Faiblesses (CWE)
Avis GHSA-5239-wwwm-4pmq — Pygments has Regular Expression Denial of Service (ReDoS) due to Inefficient Regex for GUID MatchingPYSEC-2026-2987 — Pygments has Regular Expression Denial of Service (ReDoS) due to Inefficient Regex for GUID MatchingRéférences européennes
Avis du CERT-FR
Produits affectés Produit Versions pygments affected 2.19.0 ; affected 2.19.1 ; affected 2.19.2
Références
Sources
