CVE-2019-20105 — 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

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MEDIUM

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

Published Mar 17, 2020

4.9

MEDIUM

CVSS 3.1

EPSS 1.49%

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.

Affected products

Vendor Atlassian Product Application Links Default
n/a
- Version
  6.0.0
  Status
  affected
  Constraints
  <unspecified
- Version
  7.0.0
  Status
  affected
  Constraints
  <unspecified
- Version
  7.1.0
  Status
  affected
  Constraints
  <unspecified
- Version
  unspecified
  Status
  affected
  Constraints
  <5.4.20
- Version
  unspecified
  Status
  affected
  Constraints
  <6.0.12
- Version
  unspecified
  Status
  affected
  Constraints
  <7.0.1
- Version
  unspecified
  Status
  affected
  Constraints
  <7.1.3
Vendor Atlassian Product Jira Server and Data Center Default
n/a
- Version
  7.13.8
  Status
  affected
  Constraints
  <unspecified
- Version
  8.4.2
  Status
  affected
  Constraints
  <unspecified
- Version
  8.6.0
  Status
  affected
  Constraints
  <unspecified
- Version
  unspecified
  Status
  affected
  Constraints
  <7.13.12
- Version
  unspecified
  Status
  affected
  Constraints
  <8.5.4
- Version
  unspecified
  Status
  affected
  Constraints
  <8.6.1

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Atlassian

Application Links

n/a

Version	Status	Constraints
6.0.0	affected	<unspecified
7.0.0	affected	<unspecified
7.1.0	affected	<unspecified
unspecified	affected	<5.4.20
unspecified	affected	<6.0.12
unspecified	affected	<7.0.1
unspecified	affected	<7.1.3

Atlassian

Jira Server and Data Center

n/a

Version	Status	Constraints
7.13.8	affected	<unspecified
8.4.2	affected	<unspecified
8.6.0	affected	<unspecified
unspecified	affected	<7.13.12
unspecified	affected	<8.5.4
unspecified	affected	<8.6.1

Remediation

No remediation recorded yet.

Metrics

1.49% 0.01487

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01487

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.49% (0.01487)	73.11th	v5 (v2026.06.15)
Sep 20, 2026	1.49% (0.01487)	72.90th	v5 (v2026.06.15)
Jul 20, 2024	0.09% (0.00090)	38.86th	v3 (v2023.03.01)
Jun 22, 2024	0.09% (0.00090)	38.67th	v3 (v2023.03.01)
Mar 7, 2023	0.09% (0.00090)	36.67th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	5.46% (0.05463)	76.57th	v2 (v2022.01.01)
Feb 3, 2022	3.63% (0.03634)	72.14th	v1
Jan 6, 2022	3.63% (0.03634)	71.90th	v1
Jan 5, 2022	0.83% (0.00833)	59.62th	v5 (v2026.06.15)
Apr 14, 2021	0.83% (0.00833)	0.00th	v1

Weaknesses (1)

CWE-306

Missing Authentication

References (2)

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

Link	Providers	Tags
https://ecosystem.atlassian.net/browse/APL-1391		x_refsource_MISCVendor Advisory
https://jira.atlassian.com/browse/JRASERVER-70526		x_refsource_MISCVendor Advisory