CVE-2024-7923Public exploitNetwork attack vector

Administrative access via spoofed underscore header

Published Sep 4, 2024 · Updated Nov 11, 2025

Authentication bypass in Pulpcore behind Apache with Gunicorn before 22.0 allows remote attackers to gain administrative access. The puppet-pulpcore Apache configuration removes the hyphenated remote-user header but fails to remove its underscore form, which older Gunicorn accepts as the trusted REMOTE_USER value. The exposed Pulp API must use the certificate-authentication proxy configuration; a successful spoofed request is treated as the mapped administrator.

CVSS severity9.8
Critical
EPSS probability0.81%
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 Pulpcore behind Apache with Gunicorn before 22.0 allows remote attackers to gain administrative access. The puppet-pulpcore Apache configuration removes the hyphenated remote-user header but fails to remove its underscore form, which older Gunicorn accepts as the trusted REMOTE_USER value. The exposed Pulp API must use the certificate-authentication proxy configuration; a successful spoofed request is treated as the mapped administrator.

The record

CVE
CVE-2024-7923
Published
Sep 4, 2024
Updated
Nov 11, 2025
Vendor
The Pulp Project
Product
Pulpcore
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <22.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Pulp Project · Pulpcoreversion=0 <22.0
Red Hat · Red Hat SatelliteAffected versions are unavailable in this record.

Published CVSS scores

9.8Red HatCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

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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