# RHSA-2026:25927: Security update for 4 packages

RHSA-2026:25927, 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-2026-25927
- 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-2026:25927

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [webkit2gtk3](https://patchblox.com/security/data/product/linux/webkit2gtk3.md) | RHEL 9 | 0:2.52.4-1.el9_8 |
| [webkit2gtk3-devel](https://patchblox.com/security/data/product/linux/webkit2gtk3-devel.md) | RHEL 9 | 0:2.52.4-1.el9_8 |
| [webkit2gtk3-jsc](https://patchblox.com/security/data/product/linux/webkit2gtk3-jsc.md) | RHEL 9 | 0:2.52.4-1.el9_8 |
| [webkit2gtk3-jsc-devel](https://patchblox.com/security/data/product/linux/webkit2gtk3-jsc-devel.md) | RHEL 9 | 0:2.52.4-1.el9_8 |

## 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 |  |

---

Data as of 2026-11-07T18:46:35Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.