CVE-2018-5955

Status: ModifiedCritical (9.8)—💥 Exploit

An issue was discovered in GitStack through 2.3.10. User controlled input is not sufficiently filtered, allowing an unauthenticated attacker to add a user to the server via the username and password fields to the rest/user/ URI.

CVSS

Version: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 81%
Percentile among all scored CVEs: 100
Score date: 10/7/2026

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Metasploit module (reliable, widely available exploit) · GitStack Unsanitized Argument RCE
Published on Exploit-DB · GitStack - Unsanitized Argument Remote Code Execution (Metasploit) (3/29/2018)
Published on Exploit-DB · GitStack - Remote Code Execution (1/15/2018)
Proof of concept on GitHub (unverified) · List of proofs of concept on GitHub

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Smartmobilesoftware — Gitstack

CWEs

CWE-20

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2018-5955",
  "cveTags": [],
  "metrics": {
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
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          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
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        "type": "Primary",
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        "cvssData": {
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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  "published": "2018-01-21T22:29:00.320",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-20"
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  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in GitStack through 2.3.10. User controlled input is not sufficiently filtered, allowing an unauthenticated attacker to add a user to the server via the username and password fields to the rest/user/ URI."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en GitStack hasta las versiones 2.3.10. Las entradas controladas por el usuario no se filtran lo suficiente, lo que permite que un atacante no autenticado añada un usuario al servidor mediante los campos username y password en el URI rest/user/."
    }
  ],
  "lastModified": "2026-06-17T02:01:03.720",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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              "matchCriteriaId": "DC68760A-86FA-4925-AA98-4E393E9E0393",
              "versionEndIncluding": "2.3.10"
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}