# libcoap3 security updates

Patch Radar has 31 security fixes for libcoap3, closing 16 CVEs. The newest security fix is DEBIAN-CVE-2026-29013 (4.3.4-1.1+deb13u3), released May 15, 2026.

- Web page: https://patchblox.com/security/product/linux/libcoap3
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [DEBIAN-CVE-2026-29013](https://patchblox.com/security/data/fix/linux/debian-cve-2026-29013.md) | May 15, 2026 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u3 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2026-29013](https://patchblox.com/security/data/fix/linux/debian-cve-2026-29013.md) | May 15, 2026 | Debian 14 4.3.5-3 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2025-34468](https://patchblox.com/security/data/fix/linux/debian-cve-2025-34468.md) | Dec 31, 2025 | Debian 14 4.3.5-3 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2025-34468](https://patchblox.com/security/data/fix/linux/debian-cve-2025-34468.md) | Dec 31, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u3 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2025-59391](https://patchblox.com/security/data/fix/linux/debian-cve-2025-59391.md) | Dec 8, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-59391](https://patchblox.com/security/data/fix/linux/debian-cve-2025-59391.md) | Dec 8, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65495](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65495.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | High | 1 | 0 |
| [DEBIAN-CVE-2025-65495](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65495.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | High | 1 | 0 |
| [DEBIAN-CVE-2025-65501](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65501.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65501](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65501.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65500](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65500.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65500](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65500.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65499](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65499.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65499](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65499.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65498](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65498.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65498](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65498.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65497](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65497.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65497](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65497.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65496](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65496.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65496](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65496.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-65493](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65493.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | High | 1 | 0 |
| [DEBIAN-CVE-2025-65493](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65493.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | High | 1 | 0 |
| [DEBIAN-CVE-2025-65494](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65494.md) | Nov 24, 2025 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u2 | High | 1 | 0 |
| [DEBIAN-CVE-2025-65494](https://patchblox.com/security/data/fix/linux/debian-cve-2025-65494.md) | Nov 24, 2025 | Debian 14 4.3.5-2 | High | 1 | 0 |
| [DEBIAN-CVE-2024-46304](https://patchblox.com/security/data/fix/linux/debian-cve-2024-46304.md) | Oct 9, 2024 | Debian 14 4.3.5-1 | High | 1 | 0 |
| [DEBIAN-CVE-2024-31031](https://patchblox.com/security/data/fix/linux/debian-cve-2024-31031.md) | Apr 17, 2024 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u1 | High | 1 | 0 |
| [DEBIAN-CVE-2024-31031](https://patchblox.com/security/data/fix/linux/debian-cve-2024-31031.md) | Apr 17, 2024 | Debian 14 4.3.5-1 | High | 1 | 0 |
| [DEBIAN-CVE-2024-0962](https://patchblox.com/security/data/fix/linux/debian-cve-2024-0962.md) | Jan 27, 2024 | Debian 13.5 (trixie) 4.3.4-1.1+deb13u1 | High | 1 | 0 |
| [DEBIAN-CVE-2024-0962](https://patchblox.com/security/data/fix/linux/debian-cve-2024-0962.md) | Jan 27, 2024 | Debian 14 4.3.5-1 | High | 1 | 0 |
| [DEBIAN-CVE-2023-30362](https://patchblox.com/security/data/fix/linux/debian-cve-2023-30362.md) | Jun 23, 2023 | Debian 13.5 (trixie) 4.3.1-2 | High | 1 | 0 |
| [DEBIAN-CVE-2023-30362](https://patchblox.com/security/data/fix/linux/debian-cve-2023-30362.md) | Jun 23, 2023 | Debian 14 4.3.1-2 | High | 1 | 0 |

---

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

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.