| Name | CVE-2026-17615 |
| Description | A flaw was found in RESTEasy's SourceProvider. This vulnerability allows an unauthenticated attacker to perform an unauthenticated remote file read. By sending a specially crafted XML body with a DOCTYPE declaration referencing external entities to an endpoint that accepts application/xml and returns Source or StreamSource, the server can be tricked into resolving the entity and including sensitive file contents in the HTTP response. This is due to the SourceProvider.writeTo() method creating a SAXParser without disabling external entity resolution, leading to an XML External Entity (XXE) vulnerability. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1146753, 1146754 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| resteasy (PTS) | sid | 3.6.2-4 | vulnerable |
| resteasy3.0 (PTS) | forky, sid, bookworm, trixie | 3.0.26-6 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[trixie] - resteasy3.0 <ignored> (Minor issue, no reverse deps in Trixie)
[bookworm] - resteasy3.0 <postponed> (Minor issue, no reverse deps in Trixie)
https://bugzilla.redhat.com/show_bug.cgi?id=2507635
https://github.com/resteasy/resteasy/commit/dc48c6f46f39af987652e04254f5ec8ac996bc26