4.7

CVE-2019-20100: atlassian application_links Cross-Site Request Forgery

Modified
Published 12-02-2020Last modified 17-09-2024

Vulnerability summary

CVE-2019-20100 is a medium (CVSS 4.7) Cross-Site Request Forgery vulnerability in atlassian application_links. EPSS estimates a 1.02% chance of exploitation in the next 30 days, higher than 63.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 4.7, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.7/10
010
Medium · v3.1 (NVD)
EPSS score
1.02%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 12-02-2020
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF). The following versions are affected: all versions prior to 5.4.21, 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 7.0.2, and from version 7.1.0 before version 7.1.3. The vulnerable plugin is used by Atlassian Jira Server and Data Center before version 8.7.0. An attacker could exploit this by tricking an administrative user into making malicious HTTP requests, allowing the attacker to enumerate hosts and open ports on the internal network where Jira server is present.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.02%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.02% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (tenable.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Atlassian4 products
  • application_links≥ unspecified, < 5.4.21 | ≥ 6.0.0, < unspecified | ≥ unspecified, < 6.0.12 | ≥ 6.1.0, < unspecified | ≥ unspecified, < 6.1.2 | ≥ 7.0.0, < unspecified | ≥ unspecified, < 7.0.2 | ≥ 7.1.0, < unspecified | ≥ unspecified, < 7.1.3
  • jira≥ 7.0.0, < 8.4.5
  • jira_data_center≥ 7.0.0, < 8.5.4 | ≥ 8.5.5, < 8.6.2
  • jira_server≥ unspecified, < 8.7.0 | ≥ 8.5.5, < 8.6.2

1 vendor · 4 products

References

3 links