# RHSA-2022:5481: firefox security update

RHSA-2022:5481, released July 1, 2022, fixes 8 CVEs in firefox (version 0:91.11.0-2.el9_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2022-5481
- Platform: Linux
- Released: Jul 1, 2022
- Priority: High (Closes CVE-2022-2200, high severity)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2022:5481

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | RHEL 9 | 0:91.11.0-2.el9_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-2200](https://patchblox.com/security/data/cve/CVE-2022-2200.md) | High | Mozilla Thunderbird and 4 others: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') | 9.8 | 0.2394 |  |
| [CVE-2022-34470](https://patchblox.com/security/data/cve/CVE-2022-34470.md) | High | Mozilla Thunderbird and 4 others: Use After Free | 9.8 | 0.0109 |  |
| [CVE-2022-34484](https://patchblox.com/security/data/cve/CVE-2022-34484.md) | High | Mozilla Thunderbird and 4 others: Use After Free | 9.8 | 0.0100 |  |
| [CVE-2022-34468](https://patchblox.com/security/data/cve/CVE-2022-34468.md) | High | Mozilla Thunderbird and 4 others: Inclusion of Functionality from Untrusted Control Sphere | 9.8 | 0.0096 |  |
| [CVE-2022-34481](https://patchblox.com/security/data/cve/CVE-2022-34481.md) | High | Mozilla Thunderbird and 4 others: Integer Overflow or Wraparound | 9.8 | 0.0084 |  |
| [CVE-2022-34479](https://patchblox.com/security/data/cve/CVE-2022-34479.md) | High | firefox: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.  This... | 9.8 | 0.0076 |  |
| [CVE-2022-31744](https://patchblox.com/security/data/cve/CVE-2022-31744.md) | High | Mozilla Thunderbird and 4 others: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 9.8 | 0.0062 |  |
| [CVE-2022-34472](https://patchblox.com/security/data/cve/CVE-2022-34472.md) | High | Mozilla Thunderbird and 4 others: Improper Check or Handling of Exceptional Conditions | 9.8 | 0.0060 |  |

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Data as of 2026-11-07T06:34:28Z 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