# CVE-2026-7735: gobgp: A vulnerability was found in osrg GoBGP up to 4.3.0

CVE-2026-7735 is fixed in 3 products on 1 platform, first by gobgpd 1.29-1ubuntu0.1+esm2, released May 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-7735
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0036
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 3, 2026

## Description

A vulnerability was found in osrg GoBGP up to 4.3.0. Affected is the function PathAttributeAigp.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component AIGP Attribute Parser. Performing a manipulation results in buffer overflow. It is possible to initiate the attack remotely. Upgrading to version 4.4.0 is able to address this issue. The patch is named 51ad1ada06cb41ce47b7066799981816f50b7ced. The affected component should be upgraded.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gobgp Debian 14 | 4.4.0-1 | [DEBIAN-CVE-2026-7735](https://patchblox.com/security/data/fix/linux/debian-cve-2026-7735.md) | May 15, 2026 |
| Linux | gobgpd Ubuntu 18.04.6 LTS (bionic) | 1.29-1ubuntu0.1+esm2 | [gobgpd 1.29-1ubuntu0.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gobgpd-1.29-1ubuntu0.1-esm2.md) | May 7, 2026 |
| Linux | gobgpd Ubuntu 20.04 LTS (focal) | 2.12.0-1ubuntu0.1~esm3 | [gobgpd 2.12.0-1ubuntu0.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gobgpd-2.12.0-1ubuntu0.1-esm3.md) | May 7, 2026 |
| Linux | gobgpd Ubuntu 22.04.1 LTS (jammy) | 2.25.0-3ubuntu0.1+esm4 | [gobgpd 2.25.0-3ubuntu0.1+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gobgpd-2.25.0-3ubuntu0.1-esm4.md) | May 7, 2026 |
| Linux | gobgpd Ubuntu 24.04.5 LTS (noble) | 3.23.0-1ubuntu0.3+esm4 | [gobgpd 3.23.0-1ubuntu0.3+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gobgpd-3.23.0-1ubuntu0.3-esm4.md) | May 7, 2026 |
| Linux | gobgpd Ubuntu 26.04.1 LTS (resolute) | 3.36.0-2ubuntu0.1~esm1 | [gobgpd 3.36.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gobgpd-3.36.0-2ubuntu0.1-esm1.md) | May 7, 2026 |
| Linux | golang-github-osrg-gobgp-dev Ubuntu 18.04.6 LTS (bionic) | 1.29-1ubuntu0.1+esm2 | [golang-github-osrg-gobgp-dev 1.29-1ubuntu0.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-golang-github-osrg-gobgp-dev-1.29-1ubuntu0.1-esm2.md) | May 7, 2026 |
| Linux | golang-github-osrg-gobgp-dev Ubuntu 20.04 LTS (focal) | 2.12.0-1ubuntu0.1~esm3 | [golang-github-osrg-gobgp-dev 2.12.0-1ubuntu0.1~esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-golang-github-osrg-gobgp-dev-2.12.0-1ubuntu0.1-esm3.md) | May 7, 2026 |
| Linux | golang-github-osrg-gobgp-dev Ubuntu 22.04.1 LTS (jammy) | 2.25.0-3ubuntu0.1+esm4 | [golang-github-osrg-gobgp-dev 2.25.0-3ubuntu0.1+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-golang-github-osrg-gobgp-dev-2.25.0-3ubuntu0.1-esm4.md) | May 7, 2026 |
| Linux | golang-github-osrg-gobgp-dev Ubuntu 24.04.5 LTS (noble) | 3.23.0-1ubuntu0.3+esm4 | [golang-github-osrg-gobgp-dev 3.23.0-1ubuntu0.3+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-golang-github-osrg-gobgp-dev-3.23.0-1ubuntu0.3-esm4.md) | May 7, 2026 |
| Linux | golang-github-osrg-gobgp-dev Ubuntu 26.04.1 LTS (resolute) | 3.36.0-2ubuntu0.1~esm1 | [golang-github-osrg-gobgp-dev 3.36.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-golang-github-osrg-gobgp-dev-3.36.0-2ubuntu0.1-esm1.md) | May 7, 2026 |

---

Data as of 2026-11-08T00:53:09Z 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.