CVE-2026-48708: OliveTin gives access to predefined shell commands from a web interface. In versions 3000.0.0 and prior, the template engine uses a single shared…

PriorityP351high7.5CVSS 3.1

AVNACHPRLUINSUCHIHAH

EPSS

0.40%

32.0th percentile

OliveTin gives access to predefined shell commands from a web interface. In versions 3000.0.0 and prior, the template engine uses a single shared text/template.Template instance (tpl package-level variable in service/internal/tpl/templates.go) across all goroutines. Every action execution calls tpl.Parse(source) followed by t.Execute() on this shared instance with no synchronization. When two or more actions execute concurrently (which is the normal case — each ExecRequest spawns a goroutine), a race condition occurs: one goroutine's Parse overwrites the template tree while another goroutine is calling Execute, causing cross-user command contamination, Go runtime panic, and incorrect command execution. This issue has been resolved in version 3000.13.0.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
github.com	olivetin_olivetin	>= 0 < 0.0.0-20260521225117-d74da9314005	0.0.0-20260521225117-d74da9314005
olivetin	olivetin	< 3000.13.0	3000.13.0

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