CVE-2024-37155: medium-severity vulnerability in OpenCTI-Platform opencti
OpenCTI May Bypass Introspection Restriction
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.5%
OpenCTI is an open source platform allowing organizations to manage their cyber threat intelligence knowledge and observables. Prior to version 6.1.9, the regex validation used to prevent Introspection queries can be bypassed by removing the extra whitespace, carriage return, and line feed characters from the query. GraphQL Queries in OpenCTI can be validated using the `secureIntrospectionPlugin`. The regex check in the plkugin can be bypassed by removing the carriage return and line feed characters (`\r\n`). Running a curl command against a local instance of OpenCTI will result in a limited error message. By running the same Introspection query without the `\r\n` characters, the unauthenticated user is able to successfully run a full Introspection query. Bypassing this restriction allows the attacker to gather a wealth of information about the GraphQL endpoint functionality that can be used to perform actions and/or read data without authorization. These queries can also be weaponized to conduct a Denial of Service (DoS) attack if sent repeatedly. Users should upgrade to version 6.1.9 to receive a patch for the issue.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Affected products
OpenCTI-Platform · openctiRelated CVEs — OpenCTI-Platform opencti
In the same product, most dangerous first.
CVE-2026-27960CRITICALOpenCTI privilege escalation and unauthenticated access via default admin accountEPSS 7.1%CVE-2026-39980CRITICALOpenCTI affected by RCE via notifier templateEPSS 1.4%CVE-2025-24977CRITICALOpenCTI has remote code execution and sensitive secrets exposed through web hookEPSS 0.9%CVE-2024-45404HIGHOpenCTI's lack of Rate Limit lead to OTP brute forcingEPSS 0.6%CVE-2026-35211MEDIUMOpenCTI: Elasticsearch Painless Script Injection via GraphQL `script` filter operator allows authenticated user to exfiltrate data and cause DoSEPSS 0.5%CVE-2026-76821HIGHOpenCTI: User-Controlled ReDoS in JSON Ingestion MapperEPSS 0.5%
References
https://github.com/OpenCTI-Platform/opencti/blob/6343b82b0b0a5d3ded3b30d08ce282328a556268/opencti-platform/opencti-graphql/src/graphql/graphql.js#L83-L94https://github.com/OpenCTI-Platform/opencti/commit/f87d96918c63b0c3d3ebfbea6c789d48e2f56ad5https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-4mvw-j8r9-xcgc