CVE-2017-18111 json
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 befor…
published 2019-03-29 7 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9248
- cvss
- 8.7
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Atlassian Application Links 5.0.10, 5.1.3, 5.2.6
Exploit prediction
1.63% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.7 | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:P/I:N/A:P |
Affected products
- Atlassian Application Links
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
ecosystem.atlassian.net
/browse/APL-1338
vendor-advisory
Sources
- CVE List CVE-2017-18111
- NVD CVE-2017-18111
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.