CVE-2026-5512Disclosure(github / enterprise_server)

LOWCVSS 4.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error messages included the full repository name for repositories the caller did not have access to. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-201

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • enterprise_server

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-22); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
Products
enterprise_server

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-22: 1Mentions · 2026-04-26: 1Technical Details · 2026-04-22: 1Technical Details · 2026-04-26: 104-2204-26
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-221
Disclosure1
2026-04-261
General1
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-5512 Improper Authorization in GitHub Enterprise Server Allows Private Repository Name Disclosure https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-5512

    Post summary

    The text is a concise disclosure of CVE‑2026‑5512, noting an improper authorization flaw in GitHub Enterprise Server that can leak private repository names, with no evidence of PoC, exploit code, patch, or active exploitation.

    0001060
    4.0K followersView on X
  • CVE@CVEnew
    General

    CVE-2026-5512 An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories… https://www.cve.org/CVERecord?id=CVE-2026-5512

    Post summary

    The post references CVE-2026-5512, describing an improper authorization flaw in GitHub Enterprise Server that lets authenticated users discover private repository names, but provides no PoC, exploit, or mitigation details.

    00000159
    57.3K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appgithubenterprise_server---
Appgithubenterprise_server3.20.0--

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