CVE-2021-29954

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-06-24 · updated 2026-06-17
Weakness: CWE-312

Description

Proxy functionality built into Hubs Cloud’s Reticulum software allowed access to internal URLs, including the metadata service. This vulnerability affects Hubs Cloud < mozillareality/reticulum/1.0.1/20210428201255.

Affected products

Mozilla Hubs Cloud Reticulum: before 1.0.1 — fixed in 1.0.1

How to fix

Upgrade to a fixed version: Mozilla Hubs Cloud Reticulum 1.0.1. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1707898
https://www.mozilla.org/security/advisories/mfsa2021-21/
https://bugzilla.mozilla.org/show_bug.cgi?id=1707898
https://www.mozilla.org/security/advisories/mfsa2021-21/

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