How severe is CVE-2017-18037?

CVE-2017-18037 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-18037 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18037?

CVE-2017-18037 primarily affects Atlassian Bitbucket. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-18037?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-18037 published?

CVE-2017-18037 was published on 2018-02-02 and last updated on 2026-06-17.

CVE-2017-18037

CVE-2017-18037 is a medium-severity vulnerability in Atlassian Bitbucket with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Atlassian Bitbucket
Published: 2018-02-02
Last modified: 2026-06-17

Description

The git repository tag rest resource in Atlassian Bitbucket Server from version 3.7.0 before 4.14.11 (the fixed version for 4.14.x), from version 5.0.0 before 5.0.9 (the fixed version for 5.0.x), from version 5.1.0 before 5.1.8 (the fixed version for 5.1.x), from version 5.2.0 before 5.2.6 (the fixed version for 5.2.x), from version 5.3.0 before 5.3.4 (the fixed version for 5.3.x), from version 5.4.0 before 5.4.2 (the fixed version for 5.4.x), from version 5.5.0 before 5.5.1 (the fixed version for 5.5.x) and before 5.6.0 allows remote attackers to read arbitrary files via a path traversal vulnerability through the name of a git tag.

Frequently asked questions

What is CVE-2017-18037?: The git repository tag rest resource in Atlassian Bitbucket Server from version 3.7.0 before 4.14.11 (the fixed version for 4.14.x), from version 5.0.0 before 5.0.9 (the fixed version for 5.0.x), from version 5.1.0 before 5.1.8 (the fixed version for 5.1.x), from version 5.2.0 before 5.2.6 (the fixed version for 5.2.x), from version 5.3.0 before 5.3.4 (the fixed version for 5.3.x), from version 5.4.0 before 5.4.2 (the fixed version for 5.4.x), from version 5.5.0 before 5.5.1 (the fixed version for 5.5.x) and before 5.6.0 allows remote attackers to read arbitrary files via a path traversal vulnerability through the name of a git tag.
How severe is CVE-2017-18037?: CVE-2017-18037 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-18037 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18037?: CVE-2017-18037 primarily affects Atlassian Bitbucket. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-18037?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18037 published?: CVE-2017-18037 was published on 2018-02-02 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/BSERV-10595

Affected products (7)

cpe:2.3:a:atlassian:bitbucket:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:bitbucket:5.5.0:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:bitbucket:5.5.2:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:bitbucket:5.5.3:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:bitbucket:5.5.4:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:bitbucket:5.5.5:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:bitbucket:5.5.6:*:*:*:*:*:*:*

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