CVE-2026-78380
Private Group and Market Posts Disclosed Through Public Notification Channels in RansomLook
Description
RansomLook fails to enforce the privacy status of ransomware groups and markets when distributing newly collected victim posts to external notification channels. The post-processing logic checks whether an individual post is marked private but does not verify whether the group or market to which the post belongs is configured as private. As a result, newly parsed victim information associated with a private group or market may be automatically published through enabled Rocket.Chat, Mastodon, Bluesky, and e-mail notification channels despite the entity being explicitly configured to prevent public disclosure. A similar issue affects the public MISP feed. The feed previously determined privacy using groupinfo(), which only queries the group database. Consequently, victim information associated with private markets could be added to the public MISP feed because the corresponding market privacy flag was not evaluated. An attacker or other unauthorized party able to access these public notification channels or the MISP feed may obtain victim information that was intended to remain private. Depending on the collected data, this may disclose victim names, ransomware activity, incident information, or other information associated with privately monitored groups and markets. The fix introduces a common is_private_entity() check covering both groups and markets and prevents private entity posts from being distributed through external notification channels or the public MISP feed. Internal storage and dashboard alerting remain unaffected.
INFO
Published Date :
Aug. 24, 2026, 2:17 p.m.
Last Modified :
Oct. 14, 2026, 1:10 p.m.
Remotely Exploit :
Yes !
Source :
5a6e4751-2f3f-4070-9419-94fb35b644e8
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 5a6e4751-2f3f-4070-9419-94fb35b644e8 | ||||
| CVSS 4.0 | HIGH | 5a6e4751-2f3f-4070-9419-94fb35b644e8 |
Solution
- Apply the provided fix to check entity privacy.
- Prevent private posts from external channels.
- Stop private posts from the public MISP feed.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78380.
| URL | Resource |
|---|---|
| https://github.com/RansomLook/RansomLook/commit/133cbeab3abdd64c22b02165c6505bb3e53698cc |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78380 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78380
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78380 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78380 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 14, 2026
Action Type Old Value New Value Added Translation Title: ransomlook, Description: RansomLook no logra hacer cumplir el estado de privacidad de los grupos y mercados de ransomware al distribuir publicaciones de víctimas recién recopiladas a canales de notificación externos. La lógica de postprocesamiento verifica si una publicación individual está marcada como privada, pero no verifica si el grupo o mercado al que pertenece la publicación está configurado como privado. Como resultado, la información de víctimas recién analizada asociada con un grupo o mercado privado puede ser publicada automáticamente a través de los canales de notificación habilitados de Rocket.Chat, Mastodon, Bluesky y correo electrónico, a pesar de que la entidad esté configurada explícitamente para evitar la divulgación pública. Un problema similar afecta la fuente pública de MISP. La fuente determinaba previamente la privacidad usando groupinfo(), que solo consulta la base de datos de grupos. En consecuencia, la información de víctimas asociada con mercados privados podría agregarse a la fuente pública de MISP porque la bandera de privacidad del mercado correspondiente no fue evaluada. Un atacante u otra parte no autorizada capaz de acceder a estos canales de notificación públicos o a la fuente de MISP puede obtener información de víctimas que estaba destinada a permanecer privada. Dependiendo de los datos recopilados, esto puede revelar nombres de víctimas, actividad de ransomware, información de incidentes u otra información asociada con grupos y mercados monitoreados de forma privada. La solución introduce una verificación común is_private_entity() que cubre tanto a grupos como a mercados y evita que las publicaciones de entidades privadas sean distribuidas a través de canales de notificación externos o la fuente pública de MISP. El almacenamiento interno y las alertas del panel de control permanecen inalterados. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-78380', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-24T15:19:54.618597Z'} -
New CVE Received by 5a6e4751-2f3f-4070-9419-94fb35b644e8
Aug. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/RansomLook/RansomLook/', 'vendor': 'ransomlook', 'product': 'ransomlook', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '2.0.0'}], 'defaultStatus': 'unaffected'}] Added Description RansomLook fails to enforce the privacy status of ransomware groups and markets when distributing newly collected victim posts to external notification channels. The post-processing logic checks whether an individual post is marked private but does not verify whether the group or market to which the post belongs is configured as private. As a result, newly parsed victim information associated with a private group or market may be automatically published through enabled Rocket.Chat, Mastodon, Bluesky, and e-mail notification channels despite the entity being explicitly configured to prevent public disclosure. A similar issue affects the public MISP feed. The feed previously determined privacy using groupinfo(), which only queries the group database. Consequently, victim information associated with private markets could be added to the public MISP feed because the corresponding market privacy flag was not evaluated. An attacker or other unauthorized party able to access these public notification channels or the MISP feed may obtain victim information that was intended to remain private. Depending on the collected data, this may disclose victim names, ransomware activity, incident information, or other information associated with privately monitored groups and markets. The fix introduces a common is_private_entity() check covering both groups and markets and prevents private entity posts from being distributed through external notification channels or the public MISP feed. Internal storage and dashboard alerting remain unaffected. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-862 Added Reference https://github.com/RansomLook/RansomLook/commit/133cbeab3abdd64c22b02165c6505bb3e53698cc