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CVE-2021-39328

Status: ModifiedMedium (4.8)—

The Simple Job Board WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $job_board_privacy_policy_label variable echo'd out via the ~/admin/settings/class-simple-job-board-settings-privacy.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.9.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

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).

Affected technologies (1)

Presstigers — Simple JOB Board

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-39328",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-39328",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-14T17:54:03.302721Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@wordfence.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
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          "confidentialityImpact": "LOW"
        },
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        "exploitabilityScore": 1.7
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  },
  "affected": [
    {
      "source": "security@wordfence.com",
      "affectedData": [
        {
          "vendor": "Simple Job Board",
          "product": "Simple Job Board",
          "versions": [
            {
              "status": "affected",
              "version": "2.9.4",
              "versionType": "custom",
              "lessThanOrEqual": "2.9.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-21T20:15:07.933",
  "references": [
    {
      "url": "https://github.com/BigTiger2020/word-press/blob/main/Simple%20Job%20Board%E2%80%94Stored%20Cross-Site%20Scripting%20-%202.md",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/2617364/simple-job-board/trunk/admin/settings/class-simple-job-board-settings-privacy.php",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "source": "security@wordfence.com"
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    {
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      "tags": [
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      "source": "security@wordfence.com"
    },
    {
      "url": "https://github.com/BigTiger2020/word-press/blob/main/Simple%20Job%20Board%E2%80%94Stored%20Cross-Site%20Scripting%20-%202.md",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/2617364/simple-job-board/trunk/admin/settings/class-simple-job-board-settings-privacy.php",
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Simple Job Board WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $job_board_privacy_policy_label variable echo'd out via the ~/admin/settings/class-simple-job-board-settings-privacy.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.9.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled."
    },
    {
      "lang": "es",
      "value": "El plugin Simple Job Board de WordPress es vulnerable a un ataque de tipo Cross-Site Scripting Almacenado debido a un escape insuficiente en la variable $job_board_privacy_policy_label que se hace eco por medio del archivo ~/admin/settings/class-simple-job-board-settings-privacy.php que permite a atacantes con acceso de usuario administrativo inyectar scripts web arbitrarios, en versiones hasta la 2.9.4 incluyéndola. Esto afecta a las instalaciones multisitio donde unfiltered_html está deshabilitado para los administradores, y los sitios donde unfiltered_html está deshabilitado"
    }
  ],
  "lastModified": "2026-06-17T04:03:33.430",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:presstigers:simple_job_board:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "48647FFF-4145-4C41-B0B6-58FA9F2CE8E2",
              "versionEndIncluding": "2.9.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@wordfence.com"
}