CVE-2019-20105

Name: CVE-2019-20105
Creator: NVD / NIST
Published: 2020-03-17T03:15:10.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 1.49%

Last modified Jun 17, 2026

CVE-2019-20105 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. The EditApplinkServlet resource in the Atlassian Application Links plugin before version 5.4.20, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.1, and from version 7.1.0 before version 7.1.3 allows remote attackers who have obtained access to administrator's session to access the EditApplinkServlet resource without needing to re-authenticate to pass "WebSudo" in products that support "WebSudo" through an improper access control vulnerability.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

Description

The EditApplinkServlet resource in the Atlassian Application Links plugin before version 5.4.20, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.1, and from version 7.1.0 before version 7.1.3 allows remote attackers who have obtained access to administrator's session to access the EditApplinkServlet resource without needing to re-authenticate to pass "WebSudo" in products that support "WebSudo" through an improper access control vulnerability.

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.49%

70.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Atlassian	Application Links	<= 5.4.20
Atlassian	Application Links	>= 6.0.0, <= 6.0.12
Atlassian	Application Links	>= 6.1.0, < 6.1.2
Atlassian	Application Links	>= 7.1.0, < 7.1.3
Atlassian	Application Links	7.0.0

References

https://ecosystem.atlassian.net/browse/APL-1391Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-70526Vendor Advisory
https://ecosystem.atlassian.net/browse/APL-1391Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-70526Vendor Advisory

Timeline

Published: Mar 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20105?

How severe is CVE-2019-20105?

CVE-2019-20105 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20105?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20105?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST