CVE-2026-15620 mosaxiv clawlet tool_web_fetch.go tools.webFetch server-side request forgery
Attackers can exploit a server-side request forgery vulnerability in the mosaxiv clawlet library to access internal resources or bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15620?
CVE-2026-15620 is a medium-severity server-side request forgery vulnerability in mosaxiv clawlet, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in mosaxiv clawlet up to 0.2.10. This affects the function tools.webFetch of the file tools/tool_web_fetch.go. Such manipulation leads to server-side request forgery. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The reported GitHub issue was closed with the label "not planned".
Weakness: CWE-918
Which versions are affected by CVE-2026-15620?
How do I fix CVE-2026-15620?
No fix has been published for CVE-2026-15620 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-15620 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15620 exists.
Sources
Also known as GHSA-q2gc-2p96-wxg9.