What is CVE-2024-21684?

CVE-2024-21684 is a medium-severity vulnerability in Atlassian Bitbucket Data Center, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2024-07-24.

How severe is CVE-2024-21684?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2024-21684 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Atlassian Bitbucket Data Center

CVE-2024-21684

There is a low severity open redirect vulnerability within affected versions of Bitbucket Data Center. Versions of Bitbucket DC from 8.0.0 to 8.9.12 and 8.19.0 to 8.19.1 are affected by this vulnerability. It is patched in 8.9.13 and 8.19.2. This open redirect vulnerability, with a CVSS Score of 3.1 and a CVSS Vector of CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N, allows an unauthenticated attacker to redirect a victim user upon login to Bitbucket Data Center to any arbitrary site which can be utilized for further exploitation which has low impact to confidentiality, no impact to integrity, no impact to availability, and requires user interaction. Atlassian recommends that Bitbucket Data Center customers upgrade to the version. If you are unable to do so, upgrade your instance to one of the supported fixed versions.

Vulnerability class: Open Redirect

Published 2024-07-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (15.0th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Atlassian Bitbucket Data Center — versions 8.19.1, 8.9.0 to 8.9.12, 8.8.0 to 8.8.7
Atlassian Bitbucket Data Center

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

jira.atlassian.com/browse/BSERV-19454 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2024-21684?: CVE-2024-21684 is a medium-severity vulnerability in Atlassian Bitbucket Data Center, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2024-07-24.
How severe is CVE-2024-21684?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2024-21684 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.