CVE-2017-18088

Severity: medium (CVSS 4.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-15 · updated 2026-06-17
Weakness: CWE-20

Description

Various plugin servlet resources in Atlassian Bitbucket Server before version 5.3.7 (the fixed version for 5.3.x), from version 5.4.0 before 5.4.6 (the fixed version for 5.4.x), from version 5.5.0 before 5.5.6 (the fixed version for 5.5.x), from version 5.6.0 before 5.6.3 (the fixed version for 5.6.x), from version 5.7.0 before 5.7.1 (the fixed version for 5.7.x) and before 5.8.0 allow remote attackers to conduct clickjacking attacks via framing various resources that lacked clickjacking protection.

Affected products

Atlassian Bitbucket Server: from 5.3.0 before 5.3.7; from 5.4.0 before 5.4.6; from 5.5.0 before 5.5.6; from 5.6.0 before 5.6.3; from 5.7.0 before 5.7.1 — fixed in 5.3.7, 5.4.6, 5.5.6, 5.6.3, 5.7.1

How to fix

Upgrade to a fixed version: Atlassian Bitbucket Server 5.3.7, 5.4.6, 5.5.6, 5.6.3. Check the vendor advisory for mitigations.

References

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