CVE-2026-62346: Wanderer stored XSS in elevation profile via waypoint data

CVE-2026-62346 · Severity: high · CVSS 7.6 · Published 2026-11-06

Wanderer is a self-hosted database for sharing hiking trails and outdoor adventures. An authenticated user can inject malicious code into trail waypoint names and icons that executes in the browsers of other users viewing the elevation profile. The vulnerability allows session hijacking or account compromise for victims, and can spread across federated Wanderer instances without requiring the attacker to have an account on each receiving system.

Technologies: Open-Wanderer Wanderer. Vendors: Open-Wanderer.

Quick answers

Is CVE-2026-62346 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-62346 being exploited in the wild.
How severe is CVE-2026-62346?
High severity, with a CVSS score of 7.6, published 6 November 2026.
Which products and versions are affected?
Open-Wanderer Wanderer before 0.19.3.
Is there a fix for CVE-2026-62346?
Yes: fixed in 0.19.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-62346 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-62346?
Check whether you run Open-Wanderer Wanderer 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.

How to fix

  • Fixed in: 0.19.3

Technical details

A stored cross-site scripting vulnerability exists in the elevation profile graph component (maplibre-elevation-profile/elevationprofile.ts) which interpolates waypoint.name and waypoint.icon values into an innerHTML template without HTML encoding or validation. An authenticated local user can craft malicious waypoint data; federated waypoints propagate the same payload across instances without requiring local authentication on receiving instances. Exploitation requires a victim to view the elevation profile, executing attacker-controlled JavaScript in their browser context.

Affected products

  • open-wanderer Wanderer before 0.19.3

Timeline

  • 2026-11-06: disclosed

References

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