CVE-2017-16857

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Summary

CVECVE-2017-16857
StatePUBLISHED
Assigneratlassian
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-12-05 16:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionIt is possible to bypass the bitbucket auto-unapprove plugin via minimal brute-force because it is relying on asynchronous events on the back-end. This allows an attacker to merge any code into unsuspecting repositories. This affects all versions of the auto-unapprove plugin, however since the auto-unapprove plugin is not bundled with Bitbucket Server it does not affect any particular version of Bitbucket.

Risk And Classification

Primary CVSS: v3.0 8.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.002740000 probability, percentile 0.509200000 (date 2026-05-15)

Problem Types: CWE-362 | Brute Force Attack

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary8.5HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
2.0[email protected]Primary6AV:N/AC:M/Au:S/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:S/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Atlassian Bitbucket Auto Unapprove Plugin 1.0.0 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 1.0.0 beta1 All All
Application Atlassian Bitbucket Auto Unapprove Plugin 1.1.0 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 1.2.0 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 2.0.1 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 2.0.2 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 2.0.4 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 2.1.1 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 2.1.3 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 2.2.0 All All All
Application Atlassian Bitbucket Auto Unapprove Plugin 3.0.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Atlassian Auto-Unapprove Plugin For Bitbucket Server affected All versions prior to version 3.0.1 Not specified

References

ReferenceSourceLinkTags
[BSERV-10439] Race condition in auto-unapprove plugin - CVE-2017-16857 - Create and track feature requests for Atlassian products. af854a3a-2127-422b-91ae-364da2661108 jira.atlassian.com Issue Tracking, Vendor Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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