CVE-2021-37843
Last modified
CVE-2021-37843 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The resolution SAML SSO apps for Atlassian products allow a remote attacker to login to a user account when only the username is known (i.e., no other authentication is provided). The fixed versions are for Jira: 3.6.6.1, 4.0.12, 5.0.5; for Confluence 3.6.6, 4.0.12, 5.0.5; for Bitbucket 2.5.9, 3.6.6, 4.0.12, 5.0.5; for Bamboo 2.5.9, 3.6.6, 4.0.12, 5.0.5; and for Fisheye 2.5.9.. EPSS estimates a 1.54% chance of exploitation in the next 30 days.
Description
The resolution SAML SSO apps for Atlassian products allow a remote attacker to login to a user account when only the username is known (i.e., no other authentication is provided). The fixed versions are for Jira: 3.6.6.1, 4.0.12, 5.0.5; for Confluence 3.6.6, 4.0.12, 5.0.5; for Bitbucket 2.5.9, 3.6.6, 4.0.12, 5.0.5; for Bamboo 2.5.9, 3.6.6, 4.0.12, 5.0.5; and for Fisheye 2.5.9.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Atlassian | Saml Single Sign On | < 2.5.9 |
| Atlassian | Saml Single Sign On | < 3.5.6 |
| Atlassian | Saml Single Sign On | < 3.6.6.1 |
| Atlassian | Saml Single Sign On | >= 3.0.0, < 3.6.6 |
| Atlassian | Saml Single Sign On | >= 3.6.0, < 3.6.6.1 |
| Atlassian | Saml Single Sign On | >= 4.0.0, < 4.0.12 |
| Atlassian | Saml Single Sign On | >= 5.0.0, < 5.0.5 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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