CVEvulnerability

CVE-2021-26085

5.3 MEDIUM Known exploited Published 2021-08-03 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability — Atlassian Confluence Server

Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a pre-authorization arbitrary file read vulnerability in the /s/ endpoint.

Added to KEV
2022-03-28
Remediation due
2022-04-18
Ransomware use
Known
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-26085
Status
Analyzed
Published
2021-08-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-425

Description

Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.

Affected configurations

• atlassian confluence data center (< 7.4.10) • atlassian confluence data center (>= 7.5.0 < 7.12.3) • atlassian confluence server (< 7.4.10) • atlassian confluence server (>= 7.5.0 < 7.12.3)

Related

Weakness · CWE (1)

References