CVE-2023-6746Network attack vector

Adversary-in-the-middle phishing via sensitive log data

Published Dec 21, 2023 · Updated Apr 23, 2025

Sensitive information in logs in GitHub Enterprise Server 3.7.0 through 3.11.0 allows attackers to obtain data for phishing. A back-end service writes sensitive information to appliance logs, which are also included in backup archives and streamed to external logging services. Exploitation requires access to those logs, a Backup Utilities archive, or a log receiver, and the exposed data enables an adversary-in-the-middle attack only when combined with other phishing techniques.

CVSS severity8.1
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information in logs in GitHub Enterprise Server 3.7.0 through 3.11.0 allows attackers to obtain data for phishing. A back-end service writes sensitive information to appliance logs, which are also included in backup archives and streamed to external logging services. Exploitation requires access to those logs, a Backup Utilities archive, or a log receiver, and the exposed data enables an adversary-in-the-middle attack only when combined with other phishing techniques.

The record

CVE
CVE-2023-6746
Published
Dec 21, 2023
Updated
Apr 23, 2025
Vendor
Twitter
Product
GitHub Enterprise Server
Classifications
CWE-532, T1557
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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 <=3.10.3 changes=[{"at":"3.10.4","status":"unaffected"}]
  2. Affected versionversion=3.11 <=3.11.0 changes=[{"at":"3.11.1","status":"unaffected"}]
  3. Affected versionversion=3.7.0 <=3.7.18 changes=[{"at":"3.7.19","status":"unaffected"}]
  4. Affected versionversion=3.8.0 <=3.8.11 changes=[{"at":"3.8.12","status":"unaffected"}]
  5. Affected versionversion=3.9.0 <=3.9.6 changes=[{"at":"3.9.7","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Twitter · GitHub Enterprise Serverversion=3.10.0 <=3.10.3 changes=[{"at":"3.10.4","status":"unaffected"}]; version=3.11 <=3.11.0 changes=[{"at":"3.11.1","status":"unaffected"}]; version=3.7.0 <=3.7.18 changes=[{"at":"3.7.19","status":"unaffected"}]; version=3.8.0 <=3.8.11 changes=[{"at":"3.8.12","status":"unaffected"}]; version=3.9.0 <=3.9.6 changes=[{"at":"3.9.7","status":"unaffected"}]

Published CVSS scores

5.7NIST NVDCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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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