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

Q: How do I fix CVE-2026-7735?

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

Q: Is CVE-2026-7735 being exploited?

CVE-2026-7735 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-2026-7735 affect?

CVE-2026-7735 affects gobgp. Severity is high (CVSS 7.3). 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.

Q: How urgent is CVE-2026-7735?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.3REMOTEUPGRADE

CVE-2026-7735 is a high-severity flaw (CVSS 7.3) affecting gobgp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
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-2026-7735?

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

Is CVE-2026-7735 being exploited?

CVE-2026-7735 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-2026-7735 affect?

CVE-2026-7735 affects gobgp. Severity is high (CVSS 7.3). 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.

How urgent is CVE-2026-7735?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-7736 HIGH 7.3 UPGRADE A vulnerability was determined 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
CVE-2026-7734 MEDIUM 5.3 UPGRADE A vulnerability has been found in osrg GoBGP up to 4.3.0

References

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