Auth bypass in Sipeed Picoclaw
CVE-2026-15320
A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. This vulnerability affects the function rt.ReloadConfig of the file pkg/channels/pico/pico.go. Performing a manipulation of the argument message.send results in missing authorization. It is possible to initiate the attack remotely. The exploit is now public and may be used. The reported GitHub issue was closed automatically due to inactivity.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (32.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Sipeed Picoclaw — versions 0.2.0, 0.2.1, 0.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/377260 (technical-description, vdb-entry)
- vuldb.com/vuln/377260/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-15320 (third-party-advisory)
- vuldb.com/submit/852942 (third-party-advisory)
- github.com/sipeed/picoclaw/issues/3071 (issue-tracking, exploit)
- github.com/sipeed/picoclaw/ (product)
Frequently asked questions
- What is CVE-2026-15320?
- CVE-2026-15320 is a medium-severity vulnerability in Sipeed Picoclaw, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-07-10.
- How severe is CVE-2026-15320?
- Medium severity. CVSS v3 base score is 5.4 out of 10.