CVE-2026-7734: A vulnerability has been found in osrg GoBGP up to 4.3.0

Q: How do I fix CVE-2026-7734?

gobgp: upgrade to 4.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-7734 being exploited?

CVE-2026-7734 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-7734 affect?

CVE-2026-7734 affects gobgp. Severity is medium (CVSS 5.3). 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 lea

Q: How urgent is CVE-2026-7734?

Priority 34/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-7734 is a medium-severity flaw (CVSS 5.3) affecting gobgp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 affect

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-404
Published	2026-05-04
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: osrg

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-04 06:16 UTCPublished CVE record published
2026-10-26 19:10 UTCUpdated Record last modified

osrg gobgp UPGRADE

Affected: < 4.4.0

Fixed in: 4.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gobgp || rpm -q gobgp || gobgp --version

2. UPGRADE to 4.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gobgp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gobgp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-7734?

gobgp: upgrade to 4.4.0. Exact commands for each OS are on this page.

Is CVE-2026-7734 being exploited?

CVE-2026-7734 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-7734 affect?

CVE-2026-7734 affects gobgp. Severity is medium (CVSS 5.3). 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 lea

How urgent is CVE-2026-7734?

Priority 34/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-41643 HIGH 7.5 UPGRADE GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language
CVE-2026-7736 HIGH 7.3 UPGRADE A vulnerability was determined in osrg GoBGP up to 4.3.0
CVE-2026-7735 HIGH 7.3 UPGRADE A vulnerability was found in osrg GoBGP up to 4.3.0
CVE-2026-7737 MEDIUM 5.3 UPGRADE A vulnerability was identified in osrg GoBGP up to 4.3.0

References

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