7.2Alta KEV

CVE-2021-21311SSRF in adminer

vrana adminer Publicada: 2021-02-11 23:55 (hace 5 años)

Explotación conocida — Adminer Server-Side Request Forgery Vulnerability

CISA confirmó el 29.09.2025 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 20.10.2025.

Acción requerida: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6 ; https://nvd.nist.gov/vuln/detail/CVE-2021-21311

Descripción

Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.

Debilidad (CWE): CWE-918

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
adminer	adminer	4.0.0 – < 4.7.9
debian	debian linux	9.0
vrana	adminer	>= 4.0.0, < 4.7.9

Referencias y parches

https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6 PatchThird Party Advisory
https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf ExploitThird Party Advisory
https://packagist.org/packages/vrana/adminer ProductThird Party Advisory
https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351 Patch
[debian-lts-announce] 20210302 [SECURITY] [DLA 2580-1] adminer security update mailing-listMailing ListThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311 US Government Resource

Coincidencias CPE (NVD) (2)

cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:* ≥ 4.0.0 < 4.7.9
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Puntuación CVSS

7.2Alta

Fuente: GitHub_M · CVSS 3.1

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

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

Todas las puntuaciones (4)

cna	CVSS 3.1	7.2Alta
security-advisories@github.com	CVSS 3.1	7.2Alta
nvd	CVSS 3.1	7.2Alta
nvd	CVSS 2.0	6.4Media

EPSS (probabilidad de explotación en 30 días)

98.46%

superior al 100 % de todas las CVE

Evaluación de CISA (SSVC)

Explotación: active
Automatizable: yes
Impacto técnico: partial

Cronología

ID reservado2020-12-22
Publicada2021-02-11 23:55
Llegó a IP-DB2026-10-24 23:29
Añadida a KEV2025-09-29
Última actualización2026-06-17 06:35

Asignada por (CNA): GitHub_M
Estado en NVD: Analyzed

Ver en la fuente: CVE.org · NVD

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