CVE-2025-13435
MEDIUMCVE-2025-13435 is a medium-severity (CVSS 5.6) Path Traversal vulnerability in dreampie resty. O3 Security detects and blocks CVE-2025-13435 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.
A security vulnerability has been detected in Dreampie Resty up to 1.3.1.SNAPSHOT. This affects the function Request of the file /resty-httpclient/src/main/java/cn/dreampie/client/HttpClient.java…
Description
A security vulnerability has been detected in Dreampie Resty up to 1.3.1.SNAPSHOT. This affects the function Request of the file /resty-httpclient/src/main/java/cn/dreampie/client/HttpClient.java of the component HttpClient Module. Such manipulation of the argument filename leads to path traversal. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Products
restydreampieDetection & mitigation playbook
Vendor / applianceDetect
Inventory every dreampie resty deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2025-13435 yet — track the dreampie resty advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2025-13435 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2025-13435. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2025-13435 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2025-13435 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.