CVE-2026-16196Public exploitNetwork attack vector

Authenticated SSRF via incomplete special-use IP filtering

Published Jul 18, 2026 · Updated Jul 18, 2026

Server-side request forgery in PicoClaw 0.2.0 through 0.2.9 allows remote authenticated users to reach restricted IPv4 hosts. The web_fetch preflight and connect-time guards both rely on isPrivateOrRestrictedIP, which omits 198.18.0.0/15 and permits those literal addresses. Low-privileged access that can trigger web_fetch is required; successful requests can probe or read responses from routed test, lab, or internal HTTP services.

CVSS severity6.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in PicoClaw 0.2.0 through 0.2.9 allows remote authenticated users to reach restricted IPv4 hosts. The web_fetch preflight and connect-time guards both rely on isPrivateOrRestrictedIP, which omits 198.18.0.0/15 and permits those literal addresses. Low-privileged access that can trigger web_fetch is required; successful requests can probe or read responses from routed test, lab, or internal HTTP services.

The record

CVE
CVE-2026-16196
Published
Jul 18, 2026
Updated
Jul 18, 2026
Vendor
Sipeed
Product
PicoClaw
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.2.0
  2. Affected versionversion=0.2.1
  3. Affected versionversion=0.2.2
  4. Affected versionversion=0.2.3
  5. Affected versionversion=0.2.4
  6. Affected versionversion=0.2.5
  7. Affected versionversion=0.2.6
  8. Affected versionversion=0.2.7
  9. Affected versionversion=0.2.8
  10. Affected versionversion=0.2.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sipeed · PicoClawversion=0.2.0; version=0.2.1; version=0.2.2; version=0.2.3; version=0.2.4; version=0.2.5; version=0.2.6; version=0.2.7; version=0.2.8; version=0.2.9

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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