CVE-2026-16196 Details
Description
A weakness has been identified in Sipeed PicoClaw up to 0.2.9. Impacted is the function isPrivateOrRestrictedIP of the file pkg/tools/integration/web.go of the component web_fetch. This manipulation causes server-side request forgery. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 2efbe5d560e7ed9bc5209c203dc4aa6ecdbc7405. To fix this issue, it is recommended to deploy a patch.
A server-side request forgery (SSRF) vulnerability has been identified in Sipeed PicoClaw versions through 0.2.9. The issue resides in the 'isPrivateOrRestrictedIP' function within 'pkg/tools/integration/web.go', specifically in the 'web_fetch' component. The vulnerability arises because the IP restriction logic fails to block special-use IPv4 addresses, such as '198.18.0.0/15', which should be considered restricted. This oversight allows an attacker to bypass the application's network egress policy and access internal resources via the 'web_fetch' tool.
Users are advised to update to Sipeed PicoClaw version 0.3.1 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 18, 2026CISA-ADP
Assessed Jul 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://vuldb.com/submit/852963 | CISA-ADP | Issue TrackingPermission Required |
| https://github.com/sipeed/picoclaw/ | [email protected] | ProductSource CodeVendor |
| https://github.com/sipeed/picoclaw/commit/2efbe5d560e7ed9bc5209c203dc4aa6ecdbc7405 | [email protected] | Source CodeVendor |
| https://github.com/sipeed/picoclaw/issues/3077 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/sipeed/picoclaw/pull/3085 | [email protected] | Issue TrackingVendor |
| https://vuldb.com/cve/CVE-2026-16196 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/852963 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/380012 | [email protected] | BundlePermission Required |
| https://vuldb.com/vuln/380012/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Sipeed PicoClaw | <= 0.2.9 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Modified | CISA-ADP |
| Jul 18, 2026 | New CVE Received | [email protected] |