TI-2021-15653 Aliases CVE-2021-37843 GHSA-hghq-x3wh-37g2

The resolution SAML SSO apps for Atlassian products allow a remote attacker to login to a…

MEDIUM 45CWE-306Published 2021-08-02 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

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.

Why it matters now

EPSS 0.01535 74th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 16

CPE	Versions	Role	Vendor
cpe:2.3:a:atlassian:saml_single_sign_on::::::bamboo::*	before 2.5.9	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bitbucket::*	before 2.5.9	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::fisheye::*	before 2.5.9	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::confluence::*	before 3.5.6	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::jira::*	before 3.6.6.1	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bamboo::*	3.0.0 to before 3.6.6	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bitbucket::*	3.0.0 to before 3.6.6	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::confluence::*	3.6.0 to before 3.6.6.1	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bamboo::*	4.0.0 to before 4.0.12	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bitbucket::*	4.0.0 to before 4.0.12	Vulnerable	Atlassian

cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bamboo:*:* Versions before 2.5.9 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bitbucket:*:* Versions before 2.5.9 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:fisheye:*:* Versions before 2.5.9 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:confluence:*:* Versions before 3.5.6 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:jira:*:* Versions before 3.6.6.1 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bamboo:*:* Versions 3.0.0 to before 3.6.6 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bitbucket:*:* Versions 3.0.0 to before 3.6.6 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:confluence:*:* Versions 3.6.0 to before 3.6.6.1 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bamboo:*:* Versions 4.0.0 to before 4.0.12 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bitbucket:*:* Versions 4.0.0 to before 4.0.12 Vulnerable ·Atlassian

Show 6 more CPE

CPE	Versions	Role	Vendor
cpe:2.3:a:atlassian:saml_single_sign_on::::::confluence::*	4.0.0 to before 4.0.12	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::jira::*	4.0.0 to before 4.0.12	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bamboo::*	5.0.0 to before 5.0.5	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::bitbucket::*	5.0.0 to before 5.0.5	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::confluence::*	5.0.0 to before 5.0.5	Vulnerable	Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on::::::jira::*	5.0.0 to before 5.0.5	Vulnerable	Atlassian

cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:confluence:*:* Versions 4.0.0 to before 4.0.12 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:jira:*:* Versions 4.0.0 to before 4.0.12 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bamboo:*:* Versions 5.0.0 to before 5.0.5 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:bitbucket:*:* Versions 5.0.0 to before 5.0.5 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:confluence:*:* Versions 5.0.0 to before 5.0.5 Vulnerable ·Atlassian
cpe:2.3:a:atlassian:saml_single_sign_on:*:*:*:*:*:jira:*:* Versions 5.0.0 to before 5.0.5 Vulnerable ·Atlassian

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-37843
2026-10-03 Alias added: GHSA-hghq-x3wh-37g2

References

Advisory 1

https://wiki.resolution.de/doc/saml-sso/5.0.x/all/security-advisories/2021-07-29-authentication-bypass-network-attacker-can-login-to-users-accounts-when-usernames-are-known

TI-2019-10028 An issue was discovered in the SAML Single Sign On (SSO) plugin for several Atlassian… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences