CVE-2023-49098Network attack vector

Authenticated reaction-data disclosure via incorrect permission check

Published Jan 12, 2024 · Updated Jun 3, 2025

Improper access control in Discourse Reactions before commit 2c26939 allows remote authenticated users to read other users' reaction data. The reactions_given and reactions_received actions checked profile visibility rather than notification visibility before returning JSON records. A forum account is required; the flaw exposes reaction records for another account without granting data modification or service interruption.

CVSS severity4.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Discourse Reactions before commit 2c26939 allows remote authenticated users to read other users' reaction data. The reactions_given and reactions_received actions checked profile visibility rather than notification visibility before returning JSON records. A forum account is required; the flaw exposes reaction records for another account without granting data modification or service interruption.

The record

CVE
CVE-2023-49098
Published
Jan 12, 2024
Updated
Jun 3, 2025
Vendor
Discourse
Product
Discourse Reactions
Classifications
CWE-284, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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=< commit 2c26939

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Discourse · Discourse Reactionsversion=< commit 2c26939

Published CVSS scores

4.3GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.5GitHub, Inc. CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1213Data from Information Repositories

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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