The OAuthHelper in Atlassian Application Links before version 5.0.10, from version 5.1.0 before version 5.1.3, and from version 5.2.0…

Description

The OAuthHelper in Atlassian Application Links before version 5.0.10, from version 5.1.0 before version 5.1.3, and from version 5.2.0 before version 5.2.6 used an XML document builder that was vulnerable to XXE when consuming a client OAuth request. This allowed malicious oauth application linked applications to probe internal network resources by requesting internal locations, read the contents of files and also cause an out of memory exception affecting availability via an XML External Entity vulnerability.

Scores

EPSS (exploitation in 30 days)

1.6% · top 24% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.

Weakness

• Improper Restriction of XML External Entity Reference ('XXE')
• CWE-611 (opens in a new tab)All about CWE-611 and its CVEs

Affected products

• Atlassian · Application Links

  • affected unspecified – < 5.0.10
  • affected 5.1.0 – < unspecified
  • affected unspecified – < 5.1.3
  • affected 5.2.0 – < unspecified
  • affected unspecified – < 5.2.6

References (1)

• https://ecosystem.atlassian.net/browse/APL-1338 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2017-18111](https://trackcve.app/badge/CVE-2017-18111.svg)](https://trackcve.app/cve/CVE-2017-18111)

Record last updated 16 Sept 2024, 17:32 UTC.