CVE-2023-49706Network attack vector

Unauthenticated privilege escalation via session-data race

Published Dec 19, 2023 · Updated Nov 26, 2024

Race condition in LinOTP 3 Self Service 3.0 through 3.2.4 allows remote attackers to assume a concurrent user's permissions. The multithreading safety mechanism lets one user's session-check data overwrite another concurrent user's data, exposing profile data and permissions. Exploitation requires repeated API requests while another user is active; no credentials are required, and expired sessions are not usable.

CVSS severity6.8
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in LinOTP 3 Self Service 3.0 through 3.2.4 allows remote attackers to assume a concurrent user's permissions. The multithreading safety mechanism lets one user's session-check data overwrite another concurrent user's data, exposing profile data and permissions. Exploitation requires repeated API requests while another user is active; no credentials are required, and expired sessions are not usable.

The record

CVE
CVE-2023-49706
Published
Dec 19, 2023
Updated
Nov 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1190Exploit Public-Facing Application

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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