CVE-2024-47876Network attack vector

Unauthorized login via authenticatable role-view accounts

Published Oct 15, 2024 · Updated Nov 21, 2024

Improper authorization in Sakai 23.0 through 23.2 allows remote attackers to log in as role-view kernel users and gain illegal access. BaseUserDirectoryService.authenticate accepts these simulation-only accounts without rejecting their reserved roleview user type. A locally stored roleview account is sufficient because its identifier was also assigned as its password, yielding an unintended normal-user session.

CVSS severity8.7
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Sakai 23.0 through 23.2 allows remote attackers to log in as role-view kernel users and gain illegal access. BaseUserDirectoryService.authenticate accepts these simulation-only accounts without rejecting their reserved roleview user type. A locally stored roleview account is sufficient because its identifier was also assigned as its password, yielding an unintended normal-user session.

The record

CVE
CVE-2024-47876
Published
Oct 15, 2024
Updated
Nov 21, 2024
Vendor
Sakai
Product
Sakai
Classifications
CWE-285, CWE-863, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2024Record 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 <=23.0
  2. Affected versionversion=0 <23.3
  3. Affected versionversion=>= 23.0, < 23.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sakai · Sakaiversion=0 <=23.0; version=0 <23.3; version=>= 23.0, < 23.3

Published CVSS scores

8.7GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-863Incorrect Authorization
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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