Hubs Cloud allows users to download shared content, specifically HTML and JS, which could allow javascript execution in the Hub Cloud insta…

published 2021-08-02 5y ago modified 2026-06-17 4mo ago also EUVD-2021-16438

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

Hubs Cloud allows users to download shared content, specifically HTML and JS, which could allow javascript execution in the Hub Cloud instance’s primary hosting domain.*. This vulnerability affects Hubs Cloud < mozillareality/reticulum/1.0.1/20210618012634.

Patch / fix

fixed in 1

Mozilla Hubs Cloud mozillareality/reticulum/1.0.1/20210618012634

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Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

Mozilla Hubs Cloud

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

mozilla.org /security/advisories/mfsa2021-32/
vendor-advisory
bugzilla.mozilla.org /show_bug.cgi?id=1712495
permissions-required

Sources

CVE List CVE-2021-29979
NVD CVE-2021-29979

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