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CVE-2019-14537

Status: ModifiedCritical (9.8)—PoC
Severity9.8Critical · CVSS 3.0
Exploitation probability6.14 %higher than 93% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailableProof of concept on GitHub (unverified)

YOURLS through 1.7.3 is affected by a type juggling vulnerability in the api component that can result in login bypass.

CVSS

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

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
6.14 %
Percentile among all scored CVEs
93
Score date
10/31/2026

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.

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

Affected technologies (1)

Yourls — Yourls

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2019-14537",
  "cveTags": [],
  "metrics": {
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
      {
        "type": "Primary",
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        "cvssData": {
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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  ],
  "published": "2019-08-07T17:15:12.337",
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    },
    {
      "url": "https://security-garage.com/index.php/cves/cve-2019-14537-api-authentication-bypass-via-type-juggling",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "YOURLS through 1.7.3 is affected by a type juggling vulnerability in the api component that can result in login bypass."
    },
    {
      "lang": "es",
      "value": "YOURLS hasta la versión 1.7.3, está afectado por una vulnerabilidad de tipo juggling en el componente api, que puede resultar en la omisión de un inicio de sesión."
    }
  ],
  "lastModified": "2026-06-17T02:18:36.807",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndIncluding": "1.7.3"
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          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "cve@mitre.org"
}