Dendrite through 0.13.8 contains a server-side request forgery vulnerability that allows unauthenticated attackers to cause the server to open outbound TLS connections to arbitrary hosts and ports by supplying an unvalidated serverName parameter to the legacy media download endpoint. Attackers can exploit distinguishable error response classes and leaked internal IP addresses in error messages to perform blind port scanning and enumerate internal network topology.
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History
Fri, 17 Jul 2026 18:30:00 +0000
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ssvc
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Fri, 17 Jul 2026 16:00:00 +0000
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| Description | Dendrite through 0.13.8 contains a server-side request forgery vulnerability that allows unauthenticated attackers to cause the server to open outbound TLS connections to arbitrary hosts and ports by supplying an unvalidated serverName parameter to the legacy media download endpoint. Attackers can exploit distinguishable error response classes and leaked internal IP addresses in error messages to perform blind port scanning and enumerate internal network topology. | |
| Title | Dendrite 0.13.8 SSRF via Unauthenticated Legacy Media Download Endpoint | |
| Weaknesses | CWE-918 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-17T18:05:23.658Z
Reserved: 2026-07-15T15:45:44.601Z
Link: CVE-2026-63096
Updated: 2026-07-17T17:26:25.659Z
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OpenCVE Enrichment
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