# RHSA-2026:25918: Security update for 4 packages

RHSA-2026:25918, released June 24, 2026, fixes 16 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-25918
- Platform: Linux
- Released: Jun 24, 2026
- Priority: High (Closes CVE-2026-28955, high severity)
- CVEs: 16, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:25918

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [webkit2gtk3](https://patchblox.com/security/data/product/linux/webkit2gtk3.md) | RHEL 8 | 0:2.52.4-1.el8_10 |
| [webkit2gtk3-devel](https://patchblox.com/security/data/product/linux/webkit2gtk3-devel.md) | RHEL 8 | 0:2.52.4-1.el8_10 |
| [webkit2gtk3-jsc](https://patchblox.com/security/data/product/linux/webkit2gtk3-jsc.md) | RHEL 8 | 0:2.52.4-1.el8_10 |
| [webkit2gtk3-jsc-devel](https://patchblox.com/security/data/product/linux/webkit2gtk3-jsc-devel.md) | RHEL 8 | 0:2.52.4-1.el8_10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-28955](https://patchblox.com/security/data/cve/CVE-2026-28955.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0069 |  |
| [CVE-2026-28942](https://patchblox.com/security/data/cve/CVE-2026-28942.md) | High | webkit2gtk: A use-after-free issue was addressed with improved memory management | 8.8 | 0.0061 |  |
| [CVE-2026-28847](https://patchblox.com/security/data/cve/CVE-2026-28847.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0060 |  |
| [CVE-2026-28904](https://patchblox.com/security/data/cve/CVE-2026-28904.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0041 |  |
| [CVE-2026-28905](https://patchblox.com/security/data/cve/CVE-2026-28905.md) | High | WebKit: Processing maliciously crafted web content may lead to an unexpected process crash | 8.8 | 0.0041 |  |
| [CVE-2026-28953](https://patchblox.com/security/data/cve/CVE-2026-28953.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0041 |  |
| [CVE-2026-28883](https://patchblox.com/security/data/cve/CVE-2026-28883.md) | High | WebKit: Processing maliciously crafted web content may lead to an unexpected process crash | 8.8 | 0.0040 |  |
| [CVE-2026-28946](https://patchblox.com/security/data/cve/CVE-2026-28946.md) | High | webkit2gtk: A use-after-free issue was addressed with improved memory management | 8.8 | 0.0039 |  |
| [CVE-2026-28901](https://patchblox.com/security/data/cve/CVE-2026-28901.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0039 |  |
| [CVE-2026-28902](https://patchblox.com/security/data/cve/CVE-2026-28902.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0039 |  |
| [CVE-2026-28903](https://patchblox.com/security/data/cve/CVE-2026-28903.md) | High | webkit2gtk: The issue was addressed with improved memory handling | 8.8 | 0.0039 |  |
| [CVE-2026-28947](https://patchblox.com/security/data/cve/CVE-2026-28947.md) | High | WebKit: Processing maliciously crafted web content may lead to an unexpected Safari crash | 8.8 | 0.0038 |  |
| [CVE-2026-43658](https://patchblox.com/security/data/cve/CVE-2026-43658.md) | High | WebKit: Processing maliciously crafted web content may lead to an unexpected Safari crash | 8.8 | 0.0032 |  |
| [CVE-2026-28907](https://patchblox.com/security/data/cve/CVE-2026-28907.md) | High | WebKit: Processing maliciously crafted web content may prevent Content Security Policy from being enforced | 8.8 | 0.0030 |  |
| [CVE-2026-43660](https://patchblox.com/security/data/cve/CVE-2026-43660.md) | High | WebKit: Processing maliciously crafted web content may prevent Content Security Policy from being enforced | 8.8 | 0.0027 |  |
| [CVE-2026-28958](https://patchblox.com/security/data/cve/CVE-2026-28958.md) | High | WebKit: An app may be able to access sensitive user data | 8.8 | 0.0014 |  |

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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