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Full vulnerability report · 2019
CVE-2019-3397High confidence

Atlassian Bitbucket Data Center: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Atlassian · Bitbucket Data Center

9.1CriticalCVSS 3.0
Recommended action
Within 7 days

Critical technical severity; prioritise exposed affected systems while verifying vendor guidance.

Mitigation available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 4.40% for the current model date.

Compensating controls

  • Apply the linked authoritative mitigation while planning the permanent fix.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Atlassian Bitbucket Data Center and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2019-13036

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Critical technical severity; prioritise exposed affected systems while verifying vendor guidance.

Mitigation available
01

What, why and how

Atlassian Bitbucket Data Center licensed instances starting with version 5.13.0 before 5.13.6 (the fixed version for 5.13.x), from 5.14.0 before 5.14.4 (fixed version for 5.14.x), from 5.15.0 before 5.15.3 (fixed version for 5.15.x), from 5.16.0 before 5.16.3 (fixed version for 5.16.x), from 6.0.0 before 6.0.3 (fixed version for 6.0.x), and from 6.1.0 before 6.1.2 (the fixed version for 6.1.x) allow remote attackers who have admin permissions to achieve remote code execution on a Bitbucket server instance via path traversal through the Data Center migration tool.

What

Atlassian Bitbucket Data Center licensed instances starting with version 5.13.0 before 5.13.6 (the fixed version for 5.13.x), from 5.14.0 before 5.14.4 (fixed version for 5.14.x), from 5.15.0 before 5.15.3 (fixed version for 5.15.x), from 5.16.0 before 5.16.3 (fixed version for 5.16.x), from 6.0.0 before 6.0.3 (fixed version for 6.0.x), and from 6.1.0 before 6.1.2 (the fixed version for 6.1.x) allow remote attackers who have admin permissions to achieve remote code execution on a Bitbucket server instance via path traversal through the Data Center migration tool.

Why

Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.

How

An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may execute code or commands in the affected security context.

What

Atlassian Bitbucket Data Center licensed instances starting with version 5.13.0 before 5.13.6 (the fixed version for 5.13.x), from 5.14.0 before 5.14.4 (fixed version for 5.14.x), from 5.15.0 before 5.15.3 (fixed version for 5.15.x), from 5.16.0 before 5.16.3 (fixed version for 5.16.x), from 6.0.0 before 6.0.3 (fixed version for 6.0.x), and from 6.1.0 before 6.1.2 (the fixed version for 6.1.x) allow remote attackers who have admin permissions to achieve remote code execution on a Bitbucket server instance via path traversal through the Data Center migration tool.

Why

Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.

How

An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may execute code or commands in the affected security context.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') → execute code or commands in the affected security context
Attack surface
Network
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-22 ↗

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Common Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
NetworkRemote code executionCWE-22
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

JVN iPedia · Japanese · JVNDB-2019-004964Atlassian Bitbucket Data Center におけるパストラバーサルの脆弱性

Atlassian Bitbucket Data Center には、パストラバーサルの脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Mitigation available
Affected
Bitbucket Data Center: 5.13.0 < unspecified, unspecified < 5.13.6, 5.14.0 < unspecified, unspecified < 5.14.4, 5.15.0 < unspecified, unspecified < 5.15.3, 6.0.0 < unspecified, unspecified < 6.0.3, 6.1.0 < unspecified, unspecified < 6.1.2
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Apply the mitigation in the linked authoritative guidance while planning the vendor's permanent fix.
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 3 Jun 2019 · Last source change 16 Sept 2024, 17:47 UTC · CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2019-13036
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA EUVD mappingEUVD-2019-13036 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2019-13036"}
    ENISA EUVD ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added mitigation: jira.atlassian.com/BSERV-11706; added remediation: jira.atlassian.com/BSERV-11706.
    Before
    no authoritative guidance recorded
    After
    mitigation: jira.atlassian.com/BSERV-11706 · remediation: jira.atlassian.com/BSERV-11706
    jira.atlassian.com ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    jira.atlassian.com ↗
  4. SeveritySeverity changed from Unknown to Critical.
    Before
    Unknown
    After
    Critical
    NIST NVD ↗
  5. CVSS scoreCVSS score changed from not recorded to 9.1 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
    Before
    not recorded
    After
    9.1 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
    NIST NVD ↗
  6. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Mitigation reference recorded
ENISA EUVD · EUVD-2019-13036↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2019-3397 · cve.blacktree.nl