Atlassian vulnerabilities in CISA KEV
Atlassian has 14 vulnerabilities in CISA's catalogue of flaws known to be exploited, the 19th highest of any vendor. 1 was added in the last 12 months; 8 are linked to known ransomware use (57.1% of its entries, against 20.4% across the catalogue). CISA's median fix window for these entries is 21 days (range 3 to 184), against 21 days (range 1 to 184) across the whole catalogue. The most exploited product is Confluence Data Center and Server, with 3 entries. Other frequently affected products: Confluence Server and Data Center (2); Jira Server and Data Center (2).
Catalog v2026.11.04, released 5 Nov 2026. Source CISA ↗. All KEV entries.
$ ./kev --vendor atlassian --summary
Counts are computed from the catalog release on ; the 12 month window ends there.
┌─ total entries
14
in CISA KEV
┌─ first added
2021-11-03
earliest entry
┌─ latest added
2026-10-15
most recent entry
┌─ last 12 months
1
entries added
┌─ ransomware use
8 of 14
57.1% linked to ransomware
┌─ distinct products
10
affected products
$ awk -F, {print $1} /var/log/kev/atlassian.log | uniq -c
Entries by the year CISA added them.
| Year | Entries added | Of which ransomware |
|---|---|---|
| 2021 | 4 | 3 |
| 2022 | 5 | 2 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2026 | 1 | 0 |
$ sort /var/log/kev/atlassian.log | uniq -c | sort -rn | head -5
The five products with the most entries in the catalogue.
- Confluence Data Center and Server 3 entries
- Confluence Server and Data Center 2 entries
- Jira Server and Data Center 2 entries
- Bitbucket Server and Data Center 1 entry
- Confluence 1 entry
$ kev-due-dates --vendor atlassian
Days between the date CISA added an entry and the due date it set, median and range. Due dates apply to US federal agencies; for everyone else they are a patch-first ranking signal.
┌─ Atlassian
21 days (range 3 to 184)
median and range in days
┌─ whole catalogue
21 days (range 1 to 184)
median and range in days
$ grep -o 'CWE-[0-9]*' /var/log/kev/atlassian.log | sort | uniq -c | sort -rn | head -3
Weakness types CISA records for these entries (12 of 14 have at least one CWE).
$ grep -ril 'Atlassian' /var/log/news | head -5
Our reporting that names Atlassian or one of its KEV CVE ids, newest first.
- [INFO] Hackers Use Fake Events to Steal Microsoft and Google Accounts news/fake-events-steal-microsoft-google-accounts.md
Patch Week pages with these entries
$ wc -l ./atlassian.kev · 14 rows
Descriptions: CISA Known Exploited Vulnerabilities catalogue
- CVE-2026-21589
Multiple Products
Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
due 2026-10-18 · CWE-552
$ cat CVE-2026-21589.txt
Description. Multiple Atlassian products (Bitbucket Data Center ,Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center, Crowd Data Center, Crucible and Fisheye) contain a files or directories accessible to external parties vulnerability which could allow an unauthenticated attacker to access specific files within the web application root directory in affected versions.
Required action. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- CVE-2021-26086
Jira Server and Data Center
Atlassian Jira Server and Data Center Path Traversal Vulnerability
due 2024-12-03 · CWE-22
$ cat CVE-2021-26086.txt
Description. Atlassian Jira Server and Data Center contain a path traversal vulnerability that allows a remote attacker to read particular files in the /WEB-INF/web.xml endpoint.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CVE-2023-22527
Confluence Data Center and Server [RANSOMWARE]
Atlassian Confluence Data Center and Server Template Injection Vulnerability
due 2024-02-14 · CWE-74
$ cat CVE-2023-22527.txt
Description. Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CVE-2023-22518
Confluence Data Center and Server [RANSOMWARE]
Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
due 2023-11-28 · CWE-863
$ cat CVE-2023-22518.txt
Description. Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CVE-2023-22515
Confluence Data Center and Server [RANSOMWARE]
Atlassian Confluence Data Center and Server Broken Access Control Vulnerability
due 2023-10-13
$ cat CVE-2023-22515.txt
Description. Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
- CVE-2022-36804
Bitbucket Server and Data Center
Atlassian Bitbucket Server and Data Center Command Injection Vulnerability
due 2022-10-21 · CWE-78 CWE-88 CWE-158
$ cat CVE-2022-36804.txt
Description. Multiple API endpoints of Atlassian Bitbucket Server and Data Center contain a command injection vulnerability where an attacker with access to a public Bitbucket repository, or with read permissions to a private one, can execute code by sending a malicious HTTP request.
Required action. Apply updates per vendor instructions.
- CVE-2022-26138
Confluence
Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability
due 2022-08-19 · CWE-798
$ cat CVE-2022-26138.txt
Description. Atlassian Questions For Confluence App has hard-coded credentials, exposing the username and password in plaintext. A remote unauthenticated attacker can use these credentials to log into Confluence and access all content accessible to users in the confluence-users group.
Required action. Apply updates per vendor instructions.
- CVE-2022-26134
Confluence Server/Data Center [RANSOMWARE]
Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability
due 2022-06-06 · CWE-917
$ cat CVE-2022-26134.txt
Description. Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.
Required action. Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.
- CVE-2021-26085
Confluence Server [RANSOMWARE]
Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability
due 2022-04-18 · CWE-425
$ cat CVE-2021-26085.txt
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.
Required action. Apply updates per vendor instructions.
- CVE-2019-11581
Jira Server and Data Center
Atlassian Jira Server and Data Center Server-Side Template Injection Vulnerability
due 2022-09-07 · CWE-74
$ cat CVE-2019-11581.txt
Description. Atlassian Jira Server and Data Center contain a server-side template injection vulnerability which can allow for remote code execution.
Required action. Apply updates per vendor instructions.
- CVE-2019-11580
Crowd and Crowd Data Center [RANSOMWARE]
Atlassian Crowd and Crowd Data Center Remote Code Execution Vulnerability
due 2022-05-03
$ cat CVE-2019-11580.txt
Description. Atlassian Crowd and Crowd Data Center contain a remote code execution vulnerability resulting from a pdkinstall development plugin being incorrectly enabled in release builds.
Required action. Apply updates per vendor instructions.
- CVE-2019-3396
Confluence Server and Data Server [RANSOMWARE]
Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability
due 2022-05-03 · CWE-22
$ cat CVE-2019-3396.txt
Description. Atlassian Confluence Server and Data Center contain a server-side template injection vulnerability that may allow an attacker to achieve path traversal and remote code execution.
Required action. Apply updates per vendor instructions.
- CVE-2019-3398
Confluence Server and Data Center
Atlassian Confluence Server and Data Center Path Traversal Vulnerability
due 2022-05-03 · CWE-22
$ cat CVE-2019-3398.txt
Description. Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.
Required action. Apply updates per vendor instructions.
- CVE-2021-26084
Confluence Server and Data Center [RANSOMWARE]
Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability
due 2021-11-17 · CWE-917
$ cat CVE-2021-26084.txt
Description. Atlassian Confluence Server and Data Server contain an Object-Graph Navigation Language (OGNL) injection vulnerability that may allow an unauthenticated attacker to execute code.
Required action. Apply updates per vendor instructions.