{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-115480",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-22T15:06:52.738Z",
        "datePublished": "2026-10-23T13:37:32.184Z",
        "dateUpdated": "2026-10-23T13:37:32.184Z"
    },
    "containers": {
        "cna": {
            "title": "baserCMS: Public Web API mail-form submission bypasses image CAPTCHA",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-799",
                            "lang": "en",
                            "description": "CWE-799: Improper Control of Interaction Frequency",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-693",
                            "lang": "en",
                            "description": "CWE-693: Protection Mechanism Failure",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/baserproject/basercms/security/advisories/GHSA-cpxq-6gjp-m59g",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-cpxq-6gjp-m59g"
                },
                {
                    "name": "https://github.com/baserproject/basercms/commit/3444154ca40f308ade8991e54459248f866dcf61",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/baserproject/basercms/commit/3444154ca40f308ade8991e54459248f866dcf61"
                },
                {
                    "name": "https://github.com/baserproject/basercms/releases/tag/5.3.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/baserproject/basercms/releases/tag/5.3.2"
                },
                {
                    "name": "https://github.com/baserproject/basercms/releases/tag/5.4.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/baserproject/basercms/releases/tag/5.4.2"
                }
            ],
            "affected": [
                {
                    "vendor": "baserproject",
                    "product": "basercms",
                    "versions": [
                        {
                            "version": ">= 5.0.0, < 5.3.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.4.0, < 5.4.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-23T13:37:32.184Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "baserCMS is a website development framework. In versions 5.0.0 before 5.3.2 and 5.4.0 before 5.4.2, the public POST /baser/api/bc-mail/mail_messages/add/{mailContentId}.json endpoint accepts submissions without enforcing the form's auth_captcha setting. BcMail\\Controller\\Api\\MailMessagesController::add() and MailMessagesService::create() omit the BcCaptchaService::check() verification of captcha_id and auth_captcha performed by MailController::submit() in the web UI. An unauthenticated attacker who can reach the API can therefore automate submissions without solving the enabled image challenge. The API disables FormProtection and has no rate limit; submissions can generate administrator-inbox spam, send attacker-influenced auto-replies to third parties when an email field is present, and accumulate mail_messages database records when save_info is enabled. The API already enforces the isAccepting() check added for CVE-2026-30878; the missing CAPTCHA check is a separate control failure. This issue has been patched in versions 5.3.2 and 5.4.2."
                }
            ],
            "source": {
                "advisory": "GHSA-cpxq-6gjp-m59g",
                "discovery": "UNKNOWN"
            }
        }
    }
}