7.3Alta

CVE-2026-9080UAF after pause in socket callback

curl curl Publicada: 2026-07-03 09:17 (hace 4 meses)

Descripción

Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.

Debilidad (CWE): CWE-416

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Fabricante	Producto	Versiones
curl	curl	8.13.0 – < 8.14.2, 8.15.0 – < 8.16.1, 8.17.0 – < 8.20.1
haxx	curl	8.13.0 – < 8.21.0

Referencias y parches

https://curl.se/docs/CVE-2026-9080.json Vendor Advisory
https://curl.se/docs/CVE-2026-9080.html PatchVendor Advisory
https://hackerone.com/reports/3749204 ExploitIssue TrackingThird Party Advisory

Coincidencias CPE (NVD) (1)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* ≥ 8.13.0 < 8.21.0

Puntuación CVSS

7.3Alta

Fuente: CISA-ADP · CVSS 3.1

Vector de ataque: Red
Complejidad: Baja
Privilegios: Ninguno
Interacción del usuario: Ninguna
Alcance: Sin cambio
Confidencialidad: Bajo
Integridad: Bajo
Disponibilidad: Bajo

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Todas las puntuaciones (2)

CISA-ADP	CVSS 3.1	7.3Alta
134c704f-9b21-4f2e-91b3-4a467353bcc0	CVSS 3.1	7.3Alta

EPSS (probabilidad de explotación en 30 días)

0.49%

superior al 43 % de todas las CVE

Evaluación de CISA (SSVC)

Explotación: poc
Automatizable: yes
Impacto técnico: partial

Cronología

ID reservado2026-05-20
Publicada2026-07-03 09:17
Llegó a IP-DB2026-10-24 23:46
Última actualización2026-09-15 10:16

Asignada por (CNA): curl
Estado en NVD: Modified

Ver en la fuente: CVE.org · NVD

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