High
resteasy, resteasy3.0 — security advisory
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.
- Products
- resteasy, resteasy3.0
- Affected versions
- 3.0.19-1, 3.0.19-2, 3.0.26-1, 3.0.26-1ubuntu0.1~esm1, 3.0.26-1~18.04, 3.0.26-1~18.04.1~esm1, 3.0.26-2, 3.0.26-3, 3.0.26-3ubuntu0.1, 3.0.26-6, 3.0.26-6ubuntu0.24.04.1, 3.0.6-3, 3.0.6-3ubuntu0.1~esm1, 3.6.2-2, 3.6.2-2ubuntu0.20.04.1~esm1, 3.6.2-2ubuntu0.22.04.1~esm1, 3.6.2-2ubuntu0.24.04.1~esm1, 3.6.2-3, 3.6.2-4
- Fixed versions
- Not specified
- CVEs
- CVE-2026-17615
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:55 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-17615
resteasy
Fixed versions: Not specified
resteasy3.0
Fixed versions: Not specified
resteasy
Fixed versions: Not specified
resteasy3.0
Fixed versions: Not specified
resteasy3.0
Fixed versions: Not specified
resteasy
Fixed versions: Not specified
resteasy3.0
Fixed versions: Not specified
resteasy
Fixed versions: Not specified
resteasy
Fixed versions: Not specified
resteasy3.0
Fixed versions: Not specified
resteasy
Fixed versions: Not specified
resteasy3.0
Fixed versions: Not specified
Complete source record
{
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"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-17615",
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"modified": "2026-10-17T12:59:53.326922061Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-17615",
"https://www.cve.org/CVERecord?id=CVE-2026-17615",
"https://bugzilla.redhat.com/show_bug.cgi?id=2507635",
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"source_id": "core-osv",
"document_id": 359864,
"published_at": "2026-08-31T17:17:00+00:00"
}