CVE-2019-20100 json
The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF).
published 6y ago modified 4mo ago also EUVD-2019-10656
- cvss
- 4.7
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Atlassian Application Links 5.4.21, 6.0.12, 6.1.2, 7.0.2, 7.1.3
- Atlassian Jira Server 8.7.0
Is CVE-2019-20100 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- tenable.com https://www.tenable.com/security/research/tra-2020-06 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Atlassian Application Links
- Atlassian Jira Server
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
tenable.com
/security/research/tra-2020-06
exploit, third-party-advisory
-
ecosystem.atlassian.net
/browse/APL-1390
vendor-advisory
-
jira.atlassian.com
/browse/JRASERVER-70607
issue-tracking, vendor-advisory
Sources
- CVE List CVE-2019-20100
- NVD CVE-2019-20100
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.