What is CVE-2020-14171?

CVE-2020-14171 is a medium-severity vulnerability in Atlassian Bitbucket, classified under Cleartext Transmission of Sensitive Information. CVSS score: 6.5/10. Published 2020-07-09.

How severe is CVE-2020-14171?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Atlassian Bitbucket

CVE-2020-14171

Atlassian Bitbucket Server from version 4.9.0 before version 7.2.4 allows remote attackers to intercept unencrypted repository import requests via a Man-in-the-Middle (MITM) attack.

Published 2020-07-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.3th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Atlassian Bitbucket
Atlassian Bitbucket Server — versions 4.9.0, unspecified

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

jira.atlassian.com/browse/BSERV-12434 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-14171?: CVE-2020-14171 is a medium-severity vulnerability in Atlassian Bitbucket, classified under Cleartext Transmission of Sensitive Information. CVSS score: 6.5/10. Published 2020-07-09.
How severe is CVE-2020-14171?: Medium severity. CVSS v3 base score is 6.5 out of 10.