What is GHSA-f9f8-xrcx-w6x5?

GHSA-f9f8-xrcx-w6x5 is a security advisory published by GitHub Security Advisories with Medium severity. Scapy before 2.8.0 contains a denial of service vulnerability in BER_num_dec() and BERcodec_OID...

Which CVE IDs does GHSA-f9f8-xrcx-w6x5 cover?

GHSA-f9f8-xrcx-w6x5 covers the following CVE IDs: CVE-2026-128237. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-f9f8-xrcx-w6x5?

GHSA-f9f8-xrcx-w6x5 has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-f9f8-xrcx-w6x5MediumCVSS 5.3

Scapy before 2.8.0 contains a denial of service vulnerability in BER_num_dec() and BERcodec_OID...

Vendor

GitHub Security Advisories

Published

November 13, 2026

Last Modified

November 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-128237 →

📋 Description

Scapy before 2.8.0 contains a denial of service vulnerability in BER_num_dec() and BERcodec_OID.do_dec() that allows remote attackers to exhaust CPU by supplying oversized OID arcs. Attackers can send ASN.1/BER data with many base-128 continuation bytes to cause quadratic CPU consumption or an uncaught ValueError crash on Python 3.11+.

🔗 References (4)

https://github.com/secdev/scapy/security/advisories/GHSA-xx44-g48m-mjp6
https://nvd.nist.gov/vuln/detail/CVE-2026-128237
https://www.vulncheck.com/advisories/scapy-before-2.8.0-denial-of-service-via-quadratic-ber-oid-decoding
https://github.com/advisories/GHSA-f9f8-xrcx-w6x5