CVE-2026-5845Disclosure(github / enterprise_server)

LOWCVSS 9.6 · CRITICAL

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 in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that treated a revoked/deleted installation as a global installation context, which could be chained with token revocation timing and SSH push attribution to obtain and reuse a victim-scoped token. 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-639

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

  • 4 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-04-25); latest day: 1
  • 4 total mentions across 3 days

Affected systems

Vendors
Products
enterprise_server

1 version affected across 1 product

Deep dive

Activity timeline4 mentions / 3d
01122Mentions · 2026-04-22: 1Mentions · 2026-04-25: 2Mentions · 2026-04-27: 1Technical Details · 2026-04-22: 1Technical Details · 2026-04-25: 204-2204-2504-27
Signal classification2 categories
Disclosure
375.0%
General
125.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-04-221
Disclosure1
2026-04-252
Disclosure2
2026-04-271
General1
Full discourse4 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-5845 Improper Authorization in GitHub Enterprise Server Scoped Token Authorization Below 3.21 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-5845

    Post summary

    The entry briefly describes an authorization flaw in GitHub Enterprise Server affecting versions under 3.21, with no PoC, exploit, or patch details shared.

    0001063
    4.0K followersView on X
  • IntegSec@integ_sec
    General

    CVE-2026-5845: GitHub Enterprise Server Authorization Bypass - What It Means for Your Business and How to Respond https://hubs.li/Q04dyfSS0

    Post summary

    The provided text is a headline and link to a report about CVE-2026-5845, without indicating PoC, exploit, active exploitation, patch, technical details, or false‑positive assertions.

    0000039
    30 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-5845 An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access priva… https://www.cve.org/CVERecord?id=CVE-2026-5845 ----- Traducción: CVE-2026-5845 Una… http://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑5845 as an improper authorization flaw in GitHub Enterprise Server’s scoped user‑to‑server token system, providing limited technical detail but no exploitation or mitigation information.

    0000052
    72 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-5845 An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access priva… https://www.cve.org/CVERecord?id=CVE-2026-5845

    Post summary

    The text announces CVE‑2026‑5845, an improper authorization flaw in GitHub Enterprise Server’s scoped user‑to‑server token system.

    00000443
    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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