{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "PolarLearn",
          "vendor": "polarnl",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0-PRERELEASE-15"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "PolarLearn is a free and open-source learning program. Prior to version 0-PRERELEASE-15, the vote API route (`POST /api/v1/forum/vote`) trusts the JSON body\u2019s `direction` value without runtime validation. TypeScript types are not enforced at runtime, so an attacker can send arbitrary strings (e.g., `\"x\"`) as `direction`. Downstream (`VoteServer`) treats any non-`\"up\"` and non-`null` value as a downvote and persists the invalid value in `votes_data`. This can be exploited to bypass intended business logic. Version 0-PRERELEASE-15 fixes the vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-29T22:06:37.224Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/polarnl/PolarLearn/security/advisories/GHSA-ghpx-5w2p-p3qp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/polarnl/PolarLearn/security/advisories/GHSA-ghpx-5w2p-p3qp"
        },
        {
          "name": "https://github.com/polarnl/PolarLearn/commit/e6227d94d0e53e854f6a46480db8cd1051184d41",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/polarnl/PolarLearn/commit/e6227d94d0e53e854f6a46480db8cd1051184d41"
        }
      ],
      "source": {
        "advisory": "GHSA-ghpx-5w2p-p3qp",
        "discovery": "UNKNOWN"
      },
      "title": "PolarLearn\u0027s unvalidated vote direction allows vote count manipulation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25126",
    "datePublished": "2026-01-29T22:06:37.224Z",
    "dateReserved": "2026-01-29T14:03:42.540Z",
    "dateUpdated": "2026-01-29T22:06:37.224Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-25126\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-01-29T22:15:56.423\",\"lastModified\":\"2026-01-29T22:15:56.423\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"PolarLearn is a free and open-source learning program. Prior to version 0-PRERELEASE-15, the vote API route (`POST /api/v1/forum/vote`) trusts the JSON body\u2019s `direction` value without runtime validation. TypeScript types are not enforced at runtime, so an attacker can send arbitrary strings (e.g., `\\\"x\\\"`) as `direction`. Downstream (`VoteServer`) treats any non-`\\\"up\\\"` and non-`null` value as a downvote and persists the invalid value in `votes_data`. This can be exploited to bypass intended business logic. Version 0-PRERELEASE-15 fixes the vulnerability.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"references\":[{\"url\":\"https://github.com/polarnl/PolarLearn/commit/e6227d94d0e53e854f6a46480db8cd1051184d41\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/polarnl/PolarLearn/security/advisories/GHSA-ghpx-5w2p-p3qp\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}