CVE-2024-21684Network attack vector

Unauthenticated redirection via login-page destination handling

Published Jul 24, 2024 · Updated Nov 5, 2024

Open redirect in Atlassian Bitbucket Data Center 8.0.0 through 8.9.12 and 8.19.0 through 8.19.1 allows remote attackers to redirect users after login. The flaw is in the login page's post-authentication redirect handling, but Atlassian has not disclosed the affected parameter or validation error. Exploitation requires an unauthenticated attacker to induce user interaction and a successful victim login, after which the redirect sends the user to an attacker-chosen site.

CVSS severity3.1
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Atlassian Bitbucket Data Center 8.0.0 through 8.9.12 and 8.19.0 through 8.19.1 allows remote attackers to redirect users after login. The flaw is in the login page's post-authentication redirect handling, but Atlassian has not disclosed the affected parameter or validation error. Exploitation requires an unauthenticated attacker to induce user interaction and a successful victim login, after which the redirect sends the user to an attacker-chosen site.

The record

CVE
CVE-2024-21684
Published
Jul 24, 2024
Updated
Nov 5, 2024
Vendor
Atlassian
Product
Bitbucket Server
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0.3 to 8.0.5
  2. Affected versionversion=8.1.3 to 8.1.5
  3. Affected versionversion=8.19.1
  4. Affected versionversion=8.2.2 to 8.2.4
  5. Affected versionversion=8.3.0 to 8.3.4
  6. Affected versionversion=8.4.0 to 8.4.4
  7. Affected versionversion=8.5.0 to 8.5.4
  8. Affected versionversion=8.6.0 to 8.6.4
  9. Affected versionversion=8.7.0 to 8.7.5
  10. Affected versionversion=8.8.0 to 8.8.7
  11. Affected versionversion=8.9.0 to 8.9.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Atlassian · Bitbucket Serverversion=8.0.3 to 8.0.5; version=8.1.3 to 8.1.5; version=8.19.1; version=8.2.2 to 8.2.4; version=8.3.0 to 8.3.4; version=8.4.0 to 8.4.4; version=8.5.0 to 8.5.4; version=8.6.0 to 8.6.4; version=8.7.0 to 8.7.5; version=8.8.0 to 8.8.7; version=8.9.0 to 8.9.12

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1AtlassianCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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