CVE-2026-15308
Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations
HIGH 8.7
En bref
- Source
- NVD
- EPSS
- EPSS 0.64 % · centile 50 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- PSF
- Statut NVD
- Analyzed
Description
The incremental HTML parser (html.parser.HTMLParser) allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data.
Faiblesses (CWE)
- CWE-400 — Consommation de ressources non maîtrisée (déni de service)
Références
- https://mail.python.org/archives/list/security-announce@python.org/thread/F6453LWKSHKCTWFLCOURWPLETNUIW2Z5/
- https://github.com/python/cpython/pull/153031
- https://github.com/python/cpython/issues/153030
- https://github.com/python/cpython/commit/07efb08123ba9367a7107325adb9d5626dca1ca9
- https://github.com/python/cpython/commit/7933f4bf7131aa4140750f9404f5de0aa2969ced
- https://github.com/python/cpython/commit/bcf98ddbc40ec9b3ee87da0124a5660b19b7e606
- https://github.com/python/cpython/commit/e9f92ac0b298292e7ff998e52cb8ccacfb27a0bd
- https://github.com/python/cpython/commit/785df8f743800661961528970f8598edcd291c14
- https://github.com/python/cpython/commit/1e7956f1a722df9aabc509c30f8fbdc3a2b4fdc7
- https://github.com/python/cpython/commit/c2390b9376e35a701ed3acc597b8fc87546c9b00
- http://www.openwall.com/lists/oss-security/2026/07/09/4
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 4.0 | HIGH 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | PSF |
| CVSS 4.0 | HIGH 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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@python.org (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2026-42638
- GCVE · GCVE-0-2026-15308
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1249 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1094 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0858 — Vulnérabilité dans CPython · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*< 3.10.21cpe:2.3:a:python:python:*:*:*:*:*:*:*:*≥ 3.11.0 < 3.11.16cpe:2.3:a:python:python:*:*:*:*:*:*:*:*≥ 3.12.0 < 3.12.14cpe:2.3:a:python:python:*:*:*:*:*:*:*:*≥ 3.13.0 < 3.13.15cpe:2.3:a:python:python:*:*:*:*:*:*:*:*≥ 3.14.0 < 3.14.7cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:alpha8:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:beta1:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:beta2:*:*:*:*:*:*cpe:2.3:a:python:python:3.15.0:beta3:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Python Software Foundation · CPython | affected 0 < 3.10.21 ; affected 3.11.0 < 3.11.16 ; affected 3.12.0 < 3.12.14 ; affected 3.13.0 < 3.13.15 ; affected 3.14.0 < 3.14.7 ; affected 3.15.0a1 < 3.15.0b4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |