CVE-2021-29944

medium

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

5.5

Description

Lack of escaping allowed HTML injection when a webpage was viewed in Reader View. While a Content Security Policy prevents direct code execution, HTML injection is still possible. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 88.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-29944

OS impact

OS	Version	Status	Fixed in
arch		affected
debian	sid	fixed	`0`

References

https://security-tracker.debian.org/tracker/CVE-2021-29944

Verify integrity in audit chain (admin only). AS-IS.