CVE catalog
CVE-2026-7734
A vulnerability has been found in osrg GoBGP up to…
A vulnerability has been found in osrg GoBGP up to 4.3.0. This impacts the function SRv6L3ServiceAttribute.DecodeFromBytes of the file pkg/packet/bgp/prefix_sid.go of the component SRv6 L3 Service. Such manipulation of the argument data leads to denial of service. The attack may be performed from remote. Upgrading to version 4.4.0 will fix this issue. The name of the patch is f9f7b55ec258e514be0264871fa645a2c3edad11. You should upgrade the affected component.
- Severity
- Medium · CVSS 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.46% · Oct 27, 2026
Projects and upstream resources
Reported versions and fixes
Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.
Version impact has not been established. The original provider fields are retained below.
Provider details and historical evidence
Original provider fields
{
"package_releases": [
{
"name": "gobgp",
"status": "fixed",
"release": "sid",
"version": "4.8.0-1"
},
{
"name": "gobgp",
"status": "fixed",
"release": "forky",
"version": "4.8.0-1"
},
{
"name": "gobgp",
"status": "vulnerable",
"release": "trixie",
"version": "3.36.0-2"
},
{
"name": "gobgp",
"status": "vulnerable",
"release": "bookworm",
"version": "3.10.0-1"
}
],
"fixed_versions": [
{
"bug": null,
"name": "gobgp",
"type": "source",
"origin": null,
"release": "sid",
"urgency": "not yet assigned",
"fixed_version": "4.4.0-1"
},
{
"bug": null,
"name": "gobgp",
"type": "source",
"origin": null,
"release": "forky",
"urgency": "not yet assigned",
"fixed_version": "4.4.0-1"
},
{
"bug": null,
"name": "gobgp",
"type": "source",
"origin": null,
"release": "trixie",
"urgency": "not yet assigned",
"fixed_version": ""
},
{
"bug": null,
"name": "gobgp",
"type": "source",
"origin": null,
"release": "bookworm",
"urgency": "not yet assigned",
"fixed_version": ""
}
],
"distribution_packages": [
{
"name": "gobgp",
"ecosystem": "cpe",
"fixed_version": "3.23.0-1ubuntu0.3+esm4"
},
{
"name": "gobgpd",
"ecosystem": "cpe",
"fixed_version": "3.23.0-1ubuntu0.3+esm4"
},
{
"name": "golang-github-osrg-gobgp-dev",
"ecosystem": "cpe",
"fixed_version": "3.23.0-1ubuntu0.3+esm4"
},
{
"name": "gobgp",
"ecosystem": "cpe",
"fixed_version": "not yet fixed"
},
{
"name": "gobgp",
"ecosystem": "cpe",
"fixed_version": "4.4.0"
},
{
"name": "github.com/osrg/gobgp/v4",
"ecosystem": "Go",
"fixed_version": "4.4.0"
},
{
"name": "gobgp",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.36.0-2ubuntu0.1~esm1"
}
]
}
],
"release": "pro",
"versions": [
"3.36.0-2",
"3.36.0-2build1"
],
"ecosystem": "deb",
"fixed_version": "3.36.0-2ubuntu0.1~esm1",
"provider_record_id": "UBUNTU-CVE-2026-7734"
},
{
"name": "gobgp",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"release": "25.10",
"versions": [
"3.35.0-1",
"3.36.0-2"
],
"ecosystem": "deb",
"fixed_version": "",
"provider_record_id": "UBUNTU-CVE-2026-7734"
},
{
"name": "gobgp",
"ranges": [
{
"fixed": "4.4.0",
"introduced": "",
"last_affected": "",
"start_excluding": ""
}
],
"ecosystem": "cpe",
"fixed_version": "4.4.0",
"provider_record_id": "NVD-CVE-2026-7734"
}
]
}Publisher notes
[trixie] gobgp: Minor issue [bookworm] gobgp: Minor issue, SRv6 prefix-SID unknown sub-TLV loop
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [gobgpd]Unknown
Source package: [gobgp]
Details (2)
3.10.0-1+b4· amd64 · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
3.10.0-1+b4· arm64 · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
- [golang-github-osrg-gobgp-dev]Unknown
Source package: [gobgp]
Details (2)
3.10.0-1· all · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
3.10.0-1· all · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
[Debian 13 (Trixie)]
- [gobgpd]Unknown
Source package: [gobgp]
Details (4)
3.36.0-2+b3· amd64 · trixieAffected
nvd · gobgp · debian · 13
3.36.0-2+b3· arm64 · trixieAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· amd64 · trixie-backportsAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· arm64 · trixie-backportsAffected
nvd · gobgp · debian · 13
- [golang-github-osrg-gobgp-dev]Unknown
Source package: [gobgp]
Details (4)
3.36.0-2· all · trixieAffected
nvd · gobgp · debian · 13
3.36.0-2· all · trixieAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· all · trixie-backportsAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· all · trixie-backportsAffected
nvd · gobgp · debian · 13
Observed:
References
- [https://github.com/osrg/gobgp/]
- [https://github.com/osrg/gobgp/commit/f9f7b55ec258e514be0264871fa645a2c3edad11]
- [https://github.com/osrg/gobgp/releases/tag/v4.4.0]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-7734]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-7734]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-7734]
- [https://pkg.go.dev/vuln/GO-2026-5665]
- [https://security-tracker.debian.org/tracker/CVE-2026-7734]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7734.json]
- [https://ubuntu.com/security/notices/USN-8348-1]
- [https://vuldb.com/submit/807581]
- [https://vuldb.com/vuln/360909]
- [https://vuldb.com/vuln/360909/cti]
[Debian Security Tracker] · [FIRST EPSS] · [Go Vulnerability Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [Ubuntu Security Notices (USN)]