{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34817", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-03-30T20:26:18.726Z", "datePublished": "2026-04-02T14:46:09.276Z", "dateUpdated": "2026-04-02T16:22:30.054Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-04-02T14:46:09.276Z"}, "title": "Endian Firewall /cgi-bin/smtprouting.cgi ADDRESS BCC Stored Cross-Site Scripting", "descriptions": [{"lang": "en", "value": "Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the ADDRESS BCC parameter to /cgi-bin/smtprouting.cgi. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page."}], "tags": ["x_open-source"], "datePublic": "2025-12-03T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "affected": [{"vendor": "Endian", "product": "Endian Firewall", "versions": [{"version": "3.3.25", "status": "affected", "versionType": "semver"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:endian:firewall:3.3.25:*:*:*:*:*:*:*"}, {"vulnerable": true, "criteria": "cpe:2.3:a:endian:firewall:2.1.2:*:*:*:*:*:*:*"}, {"vulnerable": true, "criteria": "cpe:2.3:a:endian:firewall:2.4:*:*:*:*:*:*:*"}]}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 5.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 6.4, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"}}], "references": [{"url": "https://help.endian.com/hc/en-us/sections/360004371358-Community", "name": "Endian Release Notes", "tags": ["release-notes"]}, {"name": "VulnCheck Advisory: Endian Firewall /cgi-bin/smtprouting.cgi ADDRESS BCC Stored Cross-Site Scripting", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/endian-firewall-cgi-bin-smtprouting-cgi-address-bcc-stored-cross-site-scripting"}], "credits": [{"lang": "en", "value": "Alex Williams from Pellera Technologies", "type": "finder"}, {"lang": "en", "value": "VulnCheck", "type": "coordinator"}], "x_generator": {"engine": "vulncheck"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-02T16:17:07.005362Z", "id": "CVE-2026-34817", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-02T16:22:30.054Z"}}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:*", "matchCriteriaId": "45E1D867-BFFB-431E-A9A8-13BBE099BAF3", "versionEndIncluding": "3.3.25", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the ADDRESS BCC parameter to /cgi-bin/smtprouting.cgi. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page."}], "id": "CVE-2026-34817", "lastModified": "2026-04-06T16:12:17.587", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "disclosure@vulncheck.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-04-02T15:16:50.310", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Release Notes"], "url": "https://help.endian.com/hc/en-us/sections/360004371358-Community"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/endian-firewall-cgi-bin-smtprouting-cgi-address-bcc-stored-cross-site-scripting"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "3.3.25"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Endian Firewall", "source": "cna", "vendor": "Endian"}, "product": "firewall", "vendor": "endian"}], "analysis": {"en": {"generated_at": "2026-04-06T19:43:37.923939+00:00", "value": {"mitigation_remediation": ["Apply the latest Endian Firewall patch or upgrade to a version where the vulnerability is fixed (e.g., 3.3.26+).", "Restrict administrative access to trusted users and network segments."], "summary": {"action": "Apply Patch", "impact": "Stored Cross\u2011Site Scripting"}, "threat_synthesis": {"affected_systems": "Endian Firewall versions 3.3.25 and earlier, including 2.1.2, 2.4, 3.3.25, and the community edition, are affected. The flaw exists in the firewalls running those builds.", "description_and_impact": "The vulnerability is a stored cross\u2011site scripting flaw in the ADDRESS BCC field of /cgi-bin/smtprouting.cgi. An attacker with valid credentials can embed JavaScript that is saved in the system. When other users load the page, the script runs in their browsers, exposing them to session hijacking, credential theft, or malicious redirects. This aligns with CWE\u201179.", "risk_and_exploitability": "The CVSS base score of 5.1 indicates moderate severity. The EPSS score is below 1\u202f%, showing low likelihood of exploitation currently. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires having authenticated access to the firewall administration interface; once logged in, an attacker can inject the payload through the ADDRESS BCC field of the SMTP routing configuration. The attacker\u2019s impact is limited to browsers of users who view the modified page."}}}}, "created": "2026-04-02T20:11:46.298077+00:00", "updated": "2026-04-07T07:56:11.917113+00:00", "vendors": ["endian", "endian$PRODUCT$firewall"]}