# DSA-5427-1: webkit2gtk security update

DSA-5427-1, released June 15, 2023, fixes 1 CVE in webkit2gtk. One of them is being exploited (CVE-2023-28204); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/linux/dsa-5427-1
- Platform: Linux
- Released: Jun 15, 2023
- Priority: Patch now (Closes CVE-2023-28204, exploited (CISA KEV))
- CVEs: 1, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2023-28204

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [webkit2gtk](https://patchblox.com/security/data/product/linux/webkit2gtk.md) | Debian 11.6 (bullseye) | 2.40.2-1~deb11u1 |
| [webkit2gtk](https://patchblox.com/security/data/product/linux/webkit2gtk.md) | Debian 12.15 (bookworm) | 2.40.2-1~deb12u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-28204](https://patchblox.com/security/data/cve/CVE-2023-28204.md) | Patch now | webkit2gtk: An out-of-bounds read was addressed with improved input validation | 6.5 | 0.1429 | CISA KEV |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo