# CVE-2026-62308: Tugtainer server-side request forgery in notification test endpoint

Source: https://junglewise.ai/threats/cve-2026-62308-tugtainer-is-a-self-hosted-app-for-automating-updates-of-docker  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-62308 · Severity: critical · CVSS 9.1 · Published 2026-09-30

Tugtainer is a self-hosted Docker container update automation tool. An authenticated user can exploit a flaw in the notification test endpoint to make the server send HTTP requests to internal systems, metadata services, or other attacker-controlled destinations, potentially exposing sensitive data or enabling lateral movement within a network.

Technologies: [Quenary Tugtainer](https://junglewise.ai/threats/technologies/tugtainer). Vendors: [Quenary](https://junglewise.ai/threats/vendors/quenary).

## Quick answers

**Is CVE-2026-62308 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-62308 being exploited in the wild.

**How severe is CVE-2026-62308?** Critical severity, with a CVSS score of 9.1, published 30 September 2026.

**Which products and versions are affected?** Quenary Tugtainer before 1.30.6.

**Is there a fix for CVE-2026-62308?** A patch was published on 2026-06-26: Version 1.30.6 released with URL validation Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-62308 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-62308?** Check whether you run Quenary Tugtainer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The /settings/test_notification endpoint accepts a urls field and passes it directly to Apprise without validating protocols, hostnames, localhost addresses, private IP ranges, or cloud metadata endpoints, resulting in an authenticated blind SSRF vulnerability. An attacker with valid credentials can enumerate internal services, retrieve cloud metadata, or access restricted resources via server-initiated requests. The issue is patched in version 1.30.6 with URL validation added.

## Affected products

- Quenary Tugtainer before 1.30.6

## Timeline

- 2026-09-30: disclosed
- 2026-06-26: patched: Version 1.30.6 released with URL validation

## References

- [https://github.com/Quenary/tugtainer/commit/c0294d0ab64985b135d0c5b566ac30bf8371f9c3](https://github.com/Quenary/tugtainer/commit/c0294d0ab64985b135d0c5b566ac30bf8371f9c3)
- [https://github.com/Quenary/tugtainer/releases/tag/v1.30.6](https://github.com/Quenary/tugtainer/releases/tag/v1.30.6)

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