CVE-2021-26084

En bref

Sévérité: CRITICAL 9.8
Exploitation: Exploitation connue (CISA KEV) · ajoutée le 2021-11-03
Exploitée selon l'ENISA depuis le 2021-11-03
EPSS: EPSS 100.00 % · centile 100 (2026-10-28)
État: PUBLISHED
Publiée: 2021-08-30
Mise à jour: 2025-12-16
Attribuée par: atlassian
Statut NVD: Analyzed

Description

In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	HIGH 7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P	NVD · nvd@nist.gov (Primary)

Faiblesses (CWE)

CWE-917

Références européennes

ENISA EUVD · EUVD-2021-12905
GCVE · GCVE-0-2021-26084

Avis du CERT-FR

CERTFR-2021-AVI-677 — Multiples vulnérabilités dans Atlassian Confluence Server et Data Center · cert.ssi.gouv.fr
CERTFR-2021-ALE-018 — Vulnérabilité dans Atlassian Confluence Server et Data Center · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* < 6.13.23
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* ≥ 6.14.0 < 7.4.11
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* ≥ 7.5.0 < 7.11.6
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* ≥ 7.12.0 < 7.12.5
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* < 6.13.23
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* ≥ 6.14.0 < 7.4.11
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* ≥ 7.5.0 < 7.11.6
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* ≥ 7.12.0 < 7.12.5

Produits affectés

Produit	Versions
Atlassian · Confluence Server	affected unspecified < 6.13.23 ; affected 6.14.0 < unspecified ; affected unspecified < 7.4.11 ; affected 7.5.0 < unspecified ; affected unspecified < 7.11.6 ; affected 7.12.0 < unspecified
Atlassian · Confluence Data Center	affected unspecified < 6.13.23 ; affected 6.14.0 < unspecified ; affected unspecified < 7.4.11 ; affected 7.5.0 < unspecified ; affected unspecified < 7.11.6 ; affected 7.12.0 < unspecified

Références

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
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