CVE-2026-85221

MISP 's CurlClient class contains an improper TLS certificate validation flaw. The CurlClient::$verifyPeer property was not explicitly initialized and defaulted to null, which effectively disabled TLS peer verification when passed to cURL. As a result, HTTPS connections made through affected inst...

CVE-2026-85221 MISP CurlClient TLS Peer Verification Disabled by Default Enables Man-in-the-Middle Attacks

MISP contains an improper TLS certificate validation vulnerability in CurlClient. The CurlClient::$verifyPeer property was not explicitly initialized and therefore defaulted to null. When passed to cURL, this value effectively disabled TLS peer verification unless the calling code explicitly...

EUVD-2026-70510

MISP contains an authentication bypass vulnerability in its LDAP and LinOTP authentication components due to insufficient validation of user-supplied credentials. The custom LdapAuthenticate and LinOTPAuthenticate components replace CakePHP's FormAuthenticate implementation but did not replicate...

CVE-2026-85216

MISP contains an authentication bypass in its LDAP and LinOTP components. The custom LdapAuthenticate and LinOTPAuthenticate components replaced CakePHP's FormAuthenticate but failed to replicate its credential validation, allowing empty or non-string values to reach underlying mechanisms. In the...

CVE-2026-85216 MISP LDAP and LinOTP Authentication Bypass via Empty or Invalid Credentials

MISP contains an authentication bypass vulnerability in its LDAP and LinOTP authentication components due to insufficient validation of user-supplied credentials. The custom LdapAuthenticate and LinOTPAuthenticate components replace CakePHP's FormAuthenticate implementation but did not replicate...

CVE-2026-81820

Affected versions of Flowintel construct timeline HTML using attacker-controllable MISP object fields such as: object UUID; object name; attribute value; attribute type; comment; first/last seen values; IDS flag. Those values were concatenated directly into HTML strings before rendering. The...

CVE-2026-81820 Flowintel HTML Injection in MISP Case History Timeline via Crafted Object Attributes

Affected versions of Flowintel construct timeline HTML using attacker-controllable MISP object fields such as: object UUID; object name; attribute value; attribute type; comment; first/last seen values; IDS flag. Those values were concatenated directly into HTML strings before rendering. The...

CVE-2026-81820

Flowintel versions greater than 3.3.0 are vulnerable to HTML injection in the MISP case history timeline. Attacker-controllable MISP object fields (object UUID, name, attribute value, attribute type, comment, first/last seen, and IDS flag) were concatenated directly into HTML strings before rende...

CVE-2026-81820 Flowintel HTML Injection in MISP Case History Timeline via Crafted Object Attributes

Affected versions of Flowintel construct timeline HTML using attacker-controllable MISP object fields such as: object UUID; object name; attribute value; attribute type; comment; first/last seen values; IDS flag. Those values were concatenated directly into HTML strings before rendering. The...

EUVD-2026-67131

Affected versions of Flowintel construct timeline HTML using attacker-controllable MISP object fields such as: object UUID; object name; attribute value; attribute type; comment; first/last seen values; IDS flag. Those values were concatenated directly into HTML strings before rendering. The...

CVE-2026-78380

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...

CVE-2026-78380 Private Group and Market Posts Disclosed Through Public Notification Channels in RansomLook

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...

EUVD-2026-64857

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...

CVE-2026-78380

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 it belong...

CVE-2026-78380 Private Group and Market Posts Disclosed Through Public Notification Channels in RansomLook

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...

CVE-2026-77761

A parser state isolation vulnerability in misp-stix could cause data from a previously processed STIX document to be retained and incorporated into the MISP event generated from a subsequent document when the same parser instance is reused. Several STIX 1 and STIX 2 parser components maintained...

CVE-2026-77751

A path traversal vulnerability existed in the handling of MISP object template names during STIX 2 import and MISP-to-STIX 2 export. MISP object names are passed to PyMISP's object-template resolution mechanism, which constructs a filesystem path by joining the configured MISP object-template...

CVE-2026-77755

A denial-of-service vulnerability was identified in misp-stix when processing attacker-controlled STIX 1 or STIX 2 documents. The STIX import code used sys.exit to handle several parsing and loading failures. Because SystemExit inherits from BaseException rather than Exception, these failures...

CVE-2026-77761 Cross-Document Parser State Contamination in misp-stix

A parser state isolation vulnerability in misp-stix could cause data from a previously processed STIX document to be retained and incorporated into the MISP event generated from a subsequent document when the same parser instance is reused. Several STIX 1 and STIX 2 parser components maintained...

CVE-2026-77761

misp-stix is a Python library for converting STIX documents to MISP events. A parser state isolation flaw allows per-document state (galaxies, galaxy clusters, passive DNS records, references, package titles, dates, and timestamps) to persist across conversions when the same parser instance is re...