CVE-2026-7734: gobgp — Fix

Description

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.31%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-404 CWE-404

Affected Products

Vendor	Product	Versions
osrg	gobgp	< 4.4.0

References

Advisories & Patches

https://github.com/osrg/gobgp/commit/f9f7b55ec258e514be0264871fa645a2c3edad11 https://github.com/osrg/gobgp/releases/tag/v4.4.0

Other References

https://github.com/osrg/gobgp/ https://vuldb.com/submit/807581 https://vuldb.com/vuln/360909 https://vuldb.com/vuln/360909/cti

Frequently Asked Questions

What is CVE-2026-7734? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-7734? +

CVE-2026-7734 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-7734? +

CVE-2026-7734 affects products from osrg, specifically: gobgp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-7734? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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