SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Affected scope and exposure questions

The current feed maps SIPp/sipp (generic). Check affected ranges and fixed versions before updating.

Recommended response

1. 1Check inventory. Check lockfiles and deployed manifests for SIPp/sipp.
2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

1. Published upstream

   Sep 13, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

2. Source modified

   Sep 13, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

3. First seen by HOL

   Sep 13, 2026

Sources and claim methodology

• GitHub security advisorygithub.com
• GitHub security advisorygithub.com
• GitHub security advisorygithub.com
• GitHub security advisorygithub.com
• Source referencevulncheck.com

Related CVEs

• SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm ParameterSame sipp/sipp package
• SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header ContentSame sipp/sipp package
• User Registration & Membership < 5.2.8 - Author+ Privilege Escalation to AdministratorSame generic ecosystem
• User Registration & Membership < 5.2.8 - Unauthenticated Open Redirect via Login Redirect ParametersSame generic ecosystem
• User Registration & Membership < 5.2.8 - Subscriber+ Privilege Escalation via Membership PurchaseSame generic ecosystem
• User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membership Thank You PageSame generic ecosystem