# RHSA-2022:0130: firefox security update

RHSA-2022:0130, released January 12, 2022, fixes 12 CVEs in firefox (version 0:91.5.0-1.el8_5). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2022-0130
- Platform: Linux
- Released: Jan 12, 2022
- Priority: High (Closes CVE-2021-4140, high severity)
- CVEs: 12, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2022:0130

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | RHEL 8 | 0:91.5.0-1.el8_5 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-4140](https://patchblox.com/security/data/cve/CVE-2021-4140.md) | High | Mozilla Firefox ESR and 3 others: XML Injection (aka Blind XPath Injection) | 10.0 | 0.0141 |  |
| [CVE-2022-22738](https://patchblox.com/security/data/cve/CVE-2022-22738.md) | High | Mozilla Firefox ESR and 3 others: Out-of-bounds Write | 9.6 | 0.0104 |  |
| [CVE-2022-22740](https://patchblox.com/security/data/cve/CVE-2022-22740.md) | High | Mozilla Firefox ESR and 3 others: Use After Free | 9.6 | 0.0101 |  |
| [CVE-2022-22751](https://patchblox.com/security/data/cve/CVE-2022-22751.md) | High | Mozilla Firefox ESR and 3 others: Out-of-bounds Write | 9.6 | 0.0092 |  |
| [CVE-2022-22742](https://patchblox.com/security/data/cve/CVE-2022-22742.md) | High | Mozilla Firefox ESR and 3 others: Out-of-bounds Read | 9.6 | 0.0085 |  |
| [CVE-2022-22737](https://patchblox.com/security/data/cve/CVE-2022-22737.md) | High | Mozilla Firefox ESR and 3 others: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | 9.6 | 0.0078 |  |
| [CVE-2022-22748](https://patchblox.com/security/data/cve/CVE-2022-22748.md) | High | Mozilla Firefox ESR and 3 others: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 9.6 | 0.0077 |  |
| [CVE-2022-22739](https://patchblox.com/security/data/cve/CVE-2022-22739.md) | High | Mozilla Firefox ESR and 3 others: Malicious websites could have tricked users into accepting launching a program to handle an external… | 9.6 | 0.0071 |  |
| [CVE-2022-22741](https://patchblox.com/security/data/cve/CVE-2022-22741.md) | High | Mozilla Firefox ESR and 3 others: When resizing a popup while requesting fullscreen access, the popup would have become unable to leave… | 9.6 | 0.0070 |  |
| [CVE-2022-22743](https://patchblox.com/security/data/cve/CVE-2022-22743.md) | High | Mozilla Firefox ESR and 3 others: When navigating from inside an iframe while requesting fullscreen access, an attacker-controlled tab… | 9.6 | 0.0069 |  |
| [CVE-2022-22745](https://patchblox.com/security/data/cve/CVE-2022-22745.md) | High | Mozilla Firefox ESR and 3 others: Exposure of Sensitive Information to an Unauthorized Actor | 9.6 | 0.0068 |  |
| [CVE-2022-22747](https://patchblox.com/security/data/cve/CVE-2022-22747.md) | High | Mozilla Firefox ESR and 3 others: Improper Certificate Validation | 9.6 | 0.0067 |  |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo