CVE-2021-26085
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- 2022-03-28 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2022-04-18 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 99.9% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Added to CISA KEV
- 2022-03-28
- Exploit probability
- 99.9% · EPSS, next 30 days
- Weakness
- CWE-425
- Record status
- Analyzed
Affected
- Atlassian Confluence Data Center < 7.4.10
- Atlassian Confluence Data Center < 7.12.3
- Atlassian Confluence Server < 7.4.10
- Atlassian Confluence Server < 7.12.3
Attack profile CVSS 3.1 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-26085.md and follow it. Check whether this project is affected by CVE-2021-26085. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://jira.atlassian.com/browse/CONFSERVER-67893
- https://jira.atlassian.com/browse/CONFSERVER-67893
References
- http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html
- https://jira.atlassian.com/browse/CONFSERVER-67893
- http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html
- https://jira.atlassian.com/browse/CONFSERVER-67893
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085