What is GHSA-f6c2-ff6x-vmmq?

GHSA-f6c2-ff6x-vmmq is a security advisory published by GitHub Security Advisories with Medium severity. Scapy before 2.8.0 contains an uncontrolled recursion vulnerability in the BER/ASN.1 decoder in...

Which CVE IDs does GHSA-f6c2-ff6x-vmmq cover?

GHSA-f6c2-ff6x-vmmq covers the following CVE IDs: CVE-2026-128238. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-f6c2-ff6x-vmmq?

GHSA-f6c2-ff6x-vmmq has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-f6c2-ff6x-vmmqMediumCVSS 5.3

Scapy before 2.8.0 contains an uncontrolled recursion vulnerability in the BER/ASN.1 decoder in...

Vendor

GitHub Security Advisories

Published

November 13, 2026

Last Modified

November 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-128238 →

📋 Description

Scapy before 2.8.0 contains an uncontrolled recursion vulnerability in the BER/ASN.1 decoder in scapy/asn1/ber.py that allows unauthenticated remote attackers to crash parsing applications. Attackers can send a single 833-byte packet with 250 nested ASN.1 SEQUENCE structures to trigger an unhandled RecursionError, terminating TLS, SNMP, X.509, or LDAP parsers even with safe=True.

🔗 References (4)

https://github.com/secdev/scapy/security/advisories/GHSA-456h-w4v7-hvpr
https://nvd.nist.gov/vuln/detail/CVE-2026-128238
https://www.vulncheck.com/advisories/scapy-before-2.8.0-uncontrolled-recursion-dos-via-ber-sequence-decoder
https://github.com/advisories/GHSA-f6c2-ff6x-vmmq