EUVD-2026-25700Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
8DescriptionCVE.org
A vulnerability was found in Typecho up to 1.3.0. This vulnerability affects the function Service::sendPingHandle of the file var/Widget/Service.php of the component Ping Back Service Endpoint. The manipulation of the argument X-Pingback/link results in server-side request forgery. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Server-side request forgery in Typecho's Pingback Service (versions up to 1.3.0) allows remote unauthenticated attackers to force the server to make arbitrary HTTP requests to internal or external resources. The vulnerability resides in Service::sendPingHandle() function where attacker-controlled X-Pingback and link parameters bypass validation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerability requires the Pingback Service endpoint (var/Widget/Service.php) to be enabled and network-accessible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is HIGH despite moderate CVSS 7.3 score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Attacker identifies a Typecho blog with Pingback service enabled (discoverable via XML-RPC endpoint detection). They craft a malicious pingback request with X-Pingback header pointing to the target blog and a link parameter containing an internal network address (e.g., http://169.254.169.254/latest/meta-data/ for AWS EC2 metadata or http://192.168.1.1/admin for internal router). … |
| Remediation | No vendor-released patch exists at time of analysis due to vendor non-responsiveness to early disclosure. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all Typecho installations and identify those running versions 1.3.0 or earlier; disable the Pingback Service via configuration or firewall rules blocking access to pingback endpoints. …
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