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CVE-2026-107175

Status: DeferredMedium (5.3)—

MISP contains a defect in its event save workflow that prevents the correlation engine from recalculating correlations when an event's distribution level or sharing group is modified.

When a user edits an existing event and changes its distribution or sharing_group_id, the internal before-save hook stored the incoming (new) data rather than the previously persisted values. As a result, the after-save comparison that determines whether a correlation refresh is needed never detected the change, and stale correlations persisted.

Security impact:

- Stale correlations may continue to expose event data to users in a broader sharing group after the event has been moved to a more restrictive group, resulting in unintended information disclosure.

Read full descriptionShow less

- Conversely, newly relevant correlations may not appear after a distribution widening, degrading the completeness of threat intelligence sharing.

Preconditions:

- An authenticated user with write access to at least one MISP event.

- The user modifies the event's distribution or sharing_group_id field.

Affected versions: <2.5.48

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Acceso autenticado remoto a servicio MISP (PR:L, AV:N) permite modificar eventos y causar divulgación de información por correlaciones obsoletas (T1005) e integridad de datos degradada (T1565.002).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationEncrypt Sensitive InformationDisable or Remove Feature or Program

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Misp — MispAI

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-107175",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/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",
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          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "affected": [
    {
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      "affectedData": [
        {
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            "cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*"
          ],
          "repo": "https://github.com/MISP/MISP",
          "vendor": "MISP",
          "modules": [
            "Event model (app/Model/Event.php)",
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          "product": "MISP",
          "versions": [
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  "published": "2026-10-07T13:17:20.563",
  "references": [
    {
      "url": "https://github.com/MISP/MISP/commit/19a389d19",
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  "vulnStatus": "Deferred",
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      "description": [
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          "value": "CWE-284"
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          "value": "CWE-665"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "MISP contains a defect in its event save workflow that prevents the correlation engine from recalculating correlations when an event's distribution level or sharing group is modified.\n\nWhen a user edits an existing event and changes its distribution or sharing_group_id, the internal before-save hook stored the incoming (new) data rather than the previously persisted values. As a result, the after-save comparison that determines whether a correlation refresh is needed never detected the change, and stale correlations persisted.\n\nSecurity impact:\n\n- Stale correlations may continue to expose event data to users in a broader sharing group after the event has been moved to a more restrictive group, resulting in unintended information disclosure.\n\n- Conversely, newly relevant correlations may not appear after a distribution widening, degrading the completeness of threat intelligence sharing.\n\nPreconditions:\n\n- An authenticated user with write access to at least one MISP event.\n\n- The user modifies the event's distribution or sharing_group_id field.\n\nAffected versions: <2.5.48"
    }
  ],
  "lastModified": "2026-10-07T15:17:19.377",
  "sourceIdentifier": "5a6e4751-2f3f-4070-9419-94fb35b644e8"
}