PatchSiren cyber security CVE debrief
CVE-2026-16083 Sipeed CVE debrief
CVE-2026-16083 is a security flaw in Sipeed PicoClaw up to 0.2.9. The vulnerability affects the webhook.ParseRequest function in the LINE Webhook component, located in pkg/channels/line/line.go. This flaw allows for authentication bypass by capture-replay. The attack can be launched remotely. According to the provided information, the exploit has been released to the public and may be used for attacks. A related GitHub issue was closed automatically with the label 'not planned' by a bot.
- Vendor
- Sipeed
- Product
- PicoClaw
- CVSS
- MEDIUM 5.5
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-18
- Original CVE updated
- 2026-07-18
- Advisory published
- 2026-07-18
- Advisory updated
- 2026-07-18
Who should care
Users and administrators of Sipeed PicoClaw up to version 0.2.9 should be aware of this vulnerability and take necessary actions to mitigate the risk. This vulnerability could potentially allow attackers to bypass authentication mechanisms, which could lead to unauthorized access or other malicious activities.
Technical summary
The vulnerability CVE-2026-16083 is caused by a flaw in the webhook.ParseRequest function of the LINE Webhook component in Sipeed PicoClaw up to 0.2.9. This function is located in the file pkg/channels/line/line.go. The vulnerability allows for authentication bypass by capture-replay, which can be exploited remotely. The CVSS score for this vulnerability is 5.5, indicating a medium severity level. The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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.
Defensive priority
Medium priority should be given to addressing this vulnerability, as it allows for authentication bypass and has a medium CVSS score. Users and administrators should review their systems and apply any available patches or mitigations.
Recommended defensive actions
- Review and apply patches or updates for Sipeed PicoClaw up to 0.2.9
- Implement additional monitoring and logging to detect potential exploitation attempts
- Consider implementing compensating controls, such as additional authentication mechanisms, to mitigate the risk of authentication bypass
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
- Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
- Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
Evidence notes
The provided information includes a CVE record and details from the NVD. The CVE record was published on 2026-07-18T09:17:07.953Z and has not been modified since then. The NVD entry is currently 'Received'. The vulnerability is related to CWE-287 and CWE-294.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-18T09:17:07.953Z and has not been modified since then. The NVD entry is currently Received.