Vulnerability-Lookup

CVE-2026-73481 (GCVE-0-2026-73481)

Vulnerability from cvelistv5 – Published: 2026-08-13 18:48 – Updated: 2026-08-14 19:15 X_Open Source

Title

phpList < 3.7.0-RC5 Cross-Site Request Forgery via Bounce Rules

Summary

phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules&del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a 'tk' parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 19:15 UTC

CWE

CWE-352 - Cross-Site Request Forgery (CSRF)

Assigner

VulnCheck

References

5 references

URL	Tags
https://github.com/phpList/phplist3/issues/1116	technical-descriptionexploitissue-tracking
https://github.com/phpList/phplist3/releases/tag/…	release-notes
https://github.com/phpList/phplist3/pull/1121	issue-trackingpatch
https://github.com/phpList/phplist3/commit/5159c3…	patch
https://www.vulncheck.com/advisories/phplist-rc5-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
phplist	phplist3	Affected: 0 , < 3.7.0-RC5 (custom)

Date Public

2026-07-06 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73481",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-14T19:15:16.077107Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-14T19:15:25.045Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:github/phpList/phplist3",
          "product": "phplist3",
          "repo": "https://github.com/phpList/phplist3",
          "vendor": "phplist",
          "versions": [
            {
              "lessThan": "3.7.0-RC5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "George Chen"
        }
      ],
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      "descriptions": [
        {
          "lang": "en",
          "value": "phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules\u0026del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a \u0027tk\u0027 parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token."
        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
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            "privilegesRequired": "NONE",
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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          "name": "Researcher Disclosure",
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          "url": "https://github.com/phpList/phplist3/issues/1116"
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          "name": "phpList 3.7.0-RC5 Release Notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/phpList/phplist3/releases/tag/v3.7.0-RC5"
        },
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          "name": "Pull Request",
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/phpList/phplist3/pull/1121"
        },
        {
          "name": "Patch Commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/phpList/phplist3/commit/5159c3ed33a5674a8169472b50d146d97f630746"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/phplist-rc5-cross-site-request-forgery-via-bounce-rules"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "title": "phpList \u003c 3.7.0-RC5 Cross-Site Request Forgery via Bounce Rules",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-73481",
    "datePublished": "2026-08-13T18:48:42.589Z",
    "dateReserved": "2026-08-12T18:19:17.024Z",
    "dateUpdated": "2026-08-14T19:15:25.045Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-73481",
      "date": "2026-08-15",
      "epss": "0.00149",
      "percentile": "0.04662"
    },
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    "vulnrichment": {
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    }
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}

GHSA-328J-QH6X-VVJQ

Vulnerability from github – Published: 2026-08-13 21:36 – Updated: 2026-08-13 21:36

Details

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-73481"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-352"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-13T19:17:34Z",
    "severity": "MODERATE"
  },
  "details": "phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules\u0026del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a \u0027tk\u0027 parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token.",
  "id": "GHSA-328j-qh6x-vvjq",
  "modified": "2026-08-13T21:36:05Z",
  "published": "2026-08-13T21:36:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73481"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpList/phplist3/issues/1116"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpList/phplist3/pull/1121"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpList/phplist3/commit/5159c3ed33a5674a8169472b50d146d97f630746"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpList/phplist3/releases/tag/v3.7.0-RC5"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/phplist-rc5-cross-site-request-forgery-via-bounce-rules"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-73481 (GCVE-0-2026-73481)

GHSA-328J-QH6X-VVJQ

Tags

Sightings

Nomenclature