Atlassian vulnerabilities
- Atlassian has 55 CVE records published between 28 Oct 2023 and 28 Oct 2026, ranking #209 of 420 vendors on this site by that count.
- Of the 55 with a CVSS score, 39 (70.9%) are rated critical or high; 0 (0% of all) have no CVSS score.
- 14 vulnerabilities attributed to Atlassian are listed in CISA's Known Exploited Vulnerabilities (KEV) catalog; the most recent, CVE-2026-21589, was added on 15 Oct 2026.
- 8 of them (57.1%) are marked as known to be used in ransomware campaigns.
- For the 14 KEV entries with a published CVE record, the median time from CVE publication to KEV listing is 51 days.
Records are attributed to Atlassian from the vendor named in the source records. About the data.
CVE records per year
Show data as a table
| Year | CVE records |
|---|---|
| 2017 | 19 |
| 2018 | 71 |
| 2019 | 69 |
| 2020 | 80 |
| 2021 | 71 |
| 2022 | 37 |
| 2023 | 14 |
| 2024 | 18 |
| 2025 | 18 |
| 2026 | 13 |
2026 is partial (through 28 Oct 2026), shown in a lighter bar.
| Year | Records | Critical | High | Critical or high | Not scored |
|---|---|---|---|---|---|
| 2026 | 13 | 2 | 11 | 100% | 0% |
| 2025 | 18 | 0 | 5 | 27.8% | 0% |
| 2024 | 18 | 1 | 14 | 83.3% | 0% |
| 2023 | 14 | 6 | 6 | 85.7% | 0% |
| 2022 | 37 | 8 | 9 | 81% | 43.2% |
| 2021 | 71 | 3 | 12 | 51.7% | 59.2% |
| 2020 | 80 | 0 | 0 | — | 100% |
| 2019 | 69 | 3 | 1 | 100% | 94.2% |
| 2018 | 71 | 0 | 0 | — | 100% |
| 2017 | 19 | 0 | 3 | 100% | 84.2% |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Exploited vulnerabilities in CISA's KEV catalog
| CVE | Product | Name | Added | Ransomware |
|---|---|---|---|---|
| CVE-2026-21589 | Multiple Products | Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability | 2026-10-15 | Unknown |
| CVE-2021-26086 | Jira Server and Data Center | Atlassian Jira Server and Data Center Path Traversal Vulnerability | 2024-11-12 | Unknown |
| CVE-2023-22527 | Confluence Data Center and Server | Atlassian Confluence Data Center and Server Template Injection Vulnerability | 2024-01-24 | Known |
| CVE-2023-22518 | Confluence Data Center and Server | Atlassian Confluence Data Center and Server Improper Authorization Vulnerability | 2023-11-07 | Known |
| CVE-2023-22515 | Confluence Data Center and Server | Atlassian Confluence Data Center and Server Broken Access Control Vulnerability | 2023-10-05 | Known |
| CVE-2022-36804 | Bitbucket Server and Data Center | Atlassian Bitbucket Server and Data Center Command Injection Vulnerability | 2022-09-30 | Unknown |
| CVE-2022-26138 | Confluence | Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability | 2022-07-29 | Unknown |
| CVE-2022-26134 | Confluence Server/Data Center | Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability | 2022-06-02 | Known |
| CVE-2021-26085 | Confluence Server | Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability | 2022-03-28 | Known |
| CVE-2019-11581 | Jira Server and Data Center | Atlassian Jira Server and Data Center Server-Side Template Injection Vulnerability | 2022-03-07 | Unknown |
| CVE-2019-11580 | Crowd and Crowd Data Center | Atlassian Crowd and Crowd Data Center Remote Code Execution Vulnerability | 2021-11-03 | Known |
| CVE-2019-3396 | Confluence Server and Data Server | Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability | 2021-11-03 | Known |
| CVE-2019-3398 | Confluence Server and Data Center | Atlassian Confluence Server and Data Center Path Traversal Vulnerability | 2021-11-03 | Unknown |
| CVE-2021-26084 | Confluence Server and Data Center | Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability | 2021-11-03 | Known |
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.
Highest exploit-prediction scores (EPSS)
EPSS estimates the probability that a vulnerability is exploited in the next 30 days. These are the 10 highest-scoring Atlassian records today.
| CVE | EPSS | Percentile | Severity | In KEV |
|---|---|---|---|---|
| CVE-2021-26084 | 100% | 100% | Critical | Yes |
| CVE-2021-26086 | 100% | 100% | Medium | Yes |
| CVE-2022-26134 | 100% | 100% | Critical | Yes |
| CVE-2023-22518 | 100% | 100% | Critical | Yes |
| CVE-2023-22527 | 100% | 100% | Critical | Yes |
| CVE-2021-26085 | 99.9% | 100% | Medium | Yes |
| CVE-2019-3396 | 99.9% | 100% | Critical | Yes |
| CVE-2020-14181 | 99.6% | 99.9% | Not scored | No |
| CVE-2026-21589 | 99.5% | 99.9% | Critical | Yes |
| CVE-2023-22515 | 99.2% | 99.9% | Critical | Yes |
Source: FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.