CVE-2025-49845Network attack vector

Restricted-whisper disclosure via stale group authorization

Published Jun 25, 2025 · Updated Jun 26, 2025

Information disclosure in Discourse allows remote authenticated users to read restricted whisper posts after losing allowed-group membership. Discourse has not published the responsible file or function; the whisper visibility path retains author access without applying current whispers_allowed_groups membership. The issue requires the account to have authored a whisper before losing group access; it affects stable before 3.4.6 and tests-passed 3.5.0.beta0-dev through 3.5.0.beta7-dev.

CVSS severity6.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Discourse allows remote authenticated users to read restricted whisper posts after losing allowed-group membership. Discourse has not published the responsible file or function; the whisper visibility path retains author access without applying current whispers_allowed_groups membership. The issue requires the account to have authored a whisper before losing group access; it affects stable before 3.4.6 and tests-passed 3.5.0.beta0-dev through 3.5.0.beta7-dev.

The record

CVE
CVE-2025-49845
Published
Jun 25, 2025
Updated
Jun 26, 2025
Vendor
Discourse
Product
Discourse
Classifications
CWE-200
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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=< 3.4.6
  2. Affected versionversion=>= 3.5.0.beta0-dev, < 3.5.0.beta8-dev

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Discourse · Discourseversion=< 3.4.6; version=>= 3.5.0.beta0-dev, < 3.5.0.beta8-dev

Published CVSS scores

6.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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