CVE-2021-26085
Affected versions of Atlassian Confluence Server allow remote attackers to view restricted...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-26085- CVSS 3.1
- 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
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-425
- Updated
- 2026-11-02
CVE List
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.
- Record
CVE-2021-26085- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-425
- Updated
- 2026-11-02
EUVDEUVD-2021-12906
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.
- Record
EUVD-2021-12906- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8mjc-qhq2-3xm8
Affected versions of Atlassian Confluence Server allow remote attackers to view restricted...
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.
- Record
GHSA-8mjc-qhq2-3xm8- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-425, CWE-862
- Updated
- 2026-11-02
CISA KEV No score
Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability
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.
- Record
CVE-2021-26085- Weakness
- CWE-425
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | ColdFusionX/CVE-2021-26085 | 2021-10-05 |
| Exploit-DB | Atlassian Confluence 7.12.2 - Pre-Authorization Arbitrary File Read | 2021-10-05 |
| Nuclei | Atlassian Confluence Server - Local File Inclusion |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26085 is a medium vulnerability (CVSS 5.3) in Atlassian Confluence Server, published August 3, 2021. CISA lists it as known to be exploited, since March 28, 2022. EUVD reports exploitation since March 28, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 99.9%, the 99th percentile. No source names a fixed version.