CVE-2021-29944

MediumCVSS 6.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published: Jun 24, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-299456.5The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue o CVE-2021-299468.8Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used CVE-2021-299478.8Mozilla developers and community members reported memory safety bugs present in Firefox 87. Some of these bugs showed evidence of memory cor CVE-2021-299482.5Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local proces CVE-2021-299497.8When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filenam CVE-2021-299507.5Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure,CVE-2021-299516.5The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network, grants normal remote users access CVE-2021-299527.5When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort ma CVE-2021-299536.1A malicious webpage could have forced a Firefox for Android user into executing attacker-controlled JavaScript in the context of another dom CVE-2021-299549.8Proxy functionality built into Hubs Cloud’s Reticulum software allowed access to internal URLs, including the metadata service. This vulnera CVE-2021-299555.3A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to leak arbitrary memory addresses and CVE-2021-299564.3OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored unencrypted on the user's local di