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CVE-2026-77987

CVE

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
September 24, 2026
Last Seen
September 24, 2026
API
Exploited in Wild
—
Ransomware Use
—
Public Exploits
—
Attack Vector
—

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

CVE-2026-77987 is a critical server-side request forgery (SSRF) vulnerability affecting GitHub Enterprise Server versions 3.17 to 3.22. This flaw allows attackers to exploit the notebook viewer by supplying a URL with an explicit port, potentially accessing internal services. The vulnerability has a...

Public Exploits

Checking GitHub for proof-of-concept code…