CVE-2026-7736

Description

A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.

CVSS v3.1 Score

7.3

HIGH

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

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.07%

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-189 CWE-189

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
osrg	gobgp	< 4.4.0

References

Advisories & Patches

https://github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592 https://github.com/osrg/gobgp/releases/tag/v4.4.0

Other References

https://github.com/osrg/gobgp/ https://vuldb.com/submit/807604 https://vuldb.com/vuln/360911 https://vuldb.com/vuln/360911/cti

Frequently Asked Questions

What is CVE-2026-7736? +

A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-7736? +

CVE-2026-7736 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-7736? +

CVE-2026-7736 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-2026-7736? +

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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