EUVD-2026-72398
GHSA-6crc-w8rh-cr5w
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Unauthenticated network endpoint with no complexity; impact is pure availability exhaustion via unbounded storage writes, with no confidentiality or integrity consequence.
Primary rating from Vendor (CIRCL).
CVSS VectorVendor: CIRCL
Lifecycle Timeline
3DescriptionCVE.org
Affected versions of MISP permit unauthenticated or weakly constrained request paths to perform persistent work without adequate input bounds or rate limiting.
The users/forgot password-reset endpoint accepted an attacker-controlled email value without first imposing a reasonable length bound or validating its format. That value was then used to create an audit log entry and queue a password-reset job, causing the supplied value to be persisted more than once per request. The commit explicitly states that an unbounded unauthenticated request field was stored twice per call with no throttle.
The fix adds:
* a maximum email input length of 1024 bytes;
* email-format validation before persistent work;
* a per-source pre-authentication request budget;
* HTTP 429 responses when that budget is exceeded;
* a 15-minute cooldown for API-access request emails;
* POST-only handling and CSRF protection for the API-access request endpoint.
The new flood filter is specifically intended to limit persistent storage costs from anonymous requests such as password resets, registrations, and failed REST authentication attempts.
Version affected: ≤2.5.45
AnalysisAI
Uncontrolled resource consumption in MISP ≤2.5.45 allows unauthenticated remote attackers to exhaust persistent storage by flooding the password-reset and related pre-authentication endpoints, each of which performs durable database writes before validating or throttling the caller. The /users/forgot endpoint accepted arbitrarily long, unvalidated email values and generated two write operations per request - an audit log entry and a queued background job - with no rate limit, enabling storage and job-queue exhaustion at modest request rates. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required for the core availability-impact attack against pre-patch MISP: the `/users/forgot` endpoint is reachable by unauthenticated callers in default deployments, and exploitation requires only network access to the MISP web interface with the ability to send HTTP POST requests. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.7 (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N) correctly captures the threat profile: unauthenticated network exploitation with no attack complexity, resulting in high availability impact and no confidentiality or integrity loss. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the upstream fix available at https://github.com/MISP/MISP/commit/d75d899be, which patches all MISP versions through 2.5.45. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all MISP deployments and document current versions; for any instances running 2.5.45 or earlier, implement emergency network access controls restricting pre-authentication endpoints (particularly /users/forgot) to known trusted sources only, as the vulnerability is exploitable without authentication. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
An issue was discovered in MISP 2.4.9x before 2.4.99. Rated high severity (CVSS 8.8), this vulnerability is remotely exp
An issue was discovered in MISP before 2.4.158. Rated critical severity (CVSS 9.8), this vulnerability is remotely explo
app/Controller/Component/IndexFilterComponent.php in MISP before 2.4.167 mishandles ordered_url_params and additional_de
SQL injection in MISP threat intelligence platform versions prior to 2.5.37 allows remote unauthenticated attackers to m
An issue was discovered in MISP before 2.4.158. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitab
MISP 2.4.172 mishandles different certificate file extensions in server sync. Rated high severity (CVSS 7.5), this vulne
In MISP before 2.4.148, app/Lib/Export/OpendataExport.php mishandles parameter data that is used in a shell_exec call. R
An issue was discovered in app/Controller/UsersController.php in MISP 2.4.92. Rated critical severity (CVSS 9.8), this v
An issue was discovered in MISP 2.4.128. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable,
MISP before 2.4.135 lacks an ACL check, related to app/Controller/GalaxyElementsController.php and app/Model/GalaxyEleme
app/View/Elements/genericElements/IndexTable/Fields/generic_field.ctp in MISP 2.4.144 does not sanitize certain data rel
MISP 2.4.148, in certain configurations, allows SQL injection via the app/Model/Log.php $conditions['org'] value. Rated
Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today