CVE-2024-4985Public exploitNetwork attack vector

Unauthenticated administrator access via forged SAML responses

Published May 20, 2024 · Updated Aug 1, 2024

Authentication bypass in GitHub Enterprise Server releases allows remote attackers to gain site administrator access via forged SAML responses. The encrypted-assertion SAML handler accepts a forged response without correctly validating its signature, then provisions or opens an account with site administrator privileges. Exposure requires SAML SSO with optional encrypted assertions enabled; successful exploitation grants unrestricted instance access without prior authentication.

CVSS severity10.0
Critical
EPSS probability2.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in GitHub Enterprise Server releases allows remote attackers to gain site administrator access via forged SAML responses. The encrypted-assertion SAML handler accepts a forged response without correctly validating its signature, then provisions or opens an account with site administrator privileges. Exposure requires SAML SSO with optional encrypted assertions enabled; successful exploitation grants unrestricted instance access without prior authentication.

The record

CVE
CVE-2024-4985
Published
May 20, 2024
Updated
Aug 1, 2024
Vendor
Twitter
Product
GitHub Enterprise Server
Classifications
CWE-303, CAPEC-115, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.10.0 <=3.10.11 changes=[{"at":"3.10.12","status":"unaffected"}]
  2. Affected versionversion=3.10.0 <=3.10.12
  3. Affected versionversion=3.11.0 <=3.11.10
  4. Affected versionversion=3.11.0 <=3.11.9 changes=[{"at":"3.11.10","status":"unaffected"}]
  5. Affected versionversion=3.12.0 <=3.12.3
  6. Affected versionversion=3.12.0 <=3.12.3 changes=[{"at":"3.12.4","status":"unaffected"}]
  7. Affected versionversion=3.9.0 <=3.9.14
  8. Affected versionversion=3.9.0 <=3.9.14 changes=[{"at":"3.9.15","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Twitter · GitHub Enterprise Serverversion=3.10.0 <=3.10.11 changes=[{"at":"3.10.12","status":"unaffected"}]; version=3.10.0 <=3.10.12; version=3.11.0 <=3.11.10; version=3.11.0 <=3.11.9 changes=[{"at":"3.11.10","status":"unaffected"}]; version=3.12.0 <=3.12.3; version=3.12.0 <=3.12.3 changes=[{"at":"3.12.4","status":"unaffected"}]; version=3.9.0 <=3.9.14; version=3.9.0 <=3.9.14 changes=[{"at":"3.9.15","status":"unaffected"}]

Published CVSS scores

10.0GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:C/RE:M/U:Red

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-303Incorrect Implementation of Authentication Algorithm
CAPEC-115Authentication Bypass
T1136Create Account

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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