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TI-2026-35989 Aliases CVE-2026-48708GHSA-7fq5-7wr8-rjwj

OliveTin has a Concurrent Template Parsing Race Condition which Leads to Cross-Request Command Contamination

Priority HIGH 68CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00402 34th percentileScored 2026-11-07
Fix Fixed OliveTin (OliveTin): 3000.13.0github.com/OliveTin/OliveTin (Go): 0.0.0-20260521225117-d74da9314005

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OliveTinOliveTinbefore 3000.13.03000.13.0Patch availableCNA
—github.com/OliveTin/OliveTin (Go)before 0.0.0-20260521225117-d74da93140050.0.0-20260521225117-d74da9314005Patch availableGHSA-7fq5-7wr8-rjwj
  • OliveTin VendorOliveTin Affected before 3000.13.0 Fixed in 3000.13.0 Patch available CNA
  • github.com/OliveTin/OliveTin (Go) Vendor— Affected before 0.0.0-20260521225117-d74da9314005 Fixed in 0.0.0-20260521225117-d74da9314005 Patch available GHSA-7fq5-7wr8-rjwj

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:olivetin:olivetin:*:*:*:*:*:*:*:*——OliveTin
  • cpe:2.3:a:olivetin:olivetin:*:*:*:*:*:*:*:* Versions — — ·OliveTin

Remediation

  • Fix · CNA OliveTin (OliveTin) Fixed in 3000.13.0
  • Fix · GHSA-7fq5-7wr8-rjwj github.com/OliveTin/OliveTin (Go) Fixed in 0.0.0-20260521225117-d74da9314005 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48708
  2. 2026-10-03 Alias added: GHSA-7fq5-7wr8-rjwj

References

Advisory 1

Other 4

  • TI-2026-23456 OliveTin: JWT Audience Validation Bypass in Local Key and HMAC Modes CVSS 3.1HIGH 8.8
  • TI-2026-22008 OS command injection in OliveTin CVSS 3.1CRITICAL 10.0
  • TI-2026-47717 OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth) CVSS 3.1HIGH 7.5
  • TI-2026-22985 OliveTin: Unauthenticated Action Termination via KillAction When Guests Must Login CVSS 3.1HIGH 7.5
  • TI-2026-22984 OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling CVSS 3.1HIGH 7.5
  • TI-2026-22627 OliveTin: Unauthenticated Denial of Service via Memory Exhaustion in PasswordHash API Endpoint CVSS 3.1HIGH 7.5
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences