CVE-2026-75514

{"id": "CVE-2026-75514", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-75514", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-20T18:58:07.780705Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "bunkerity", "product": "bunkerweb", "versions": [{"status": "affected", "version": "< 1.6.13"}]}]}], "published": "2026-08-20T19:17:03.637", "references": [{"url": "https://github.com/bunkerity/bunkerweb/commit/1a97e5b3f977130a1b84507a9e1f703c8eec12eb", "source": "security-advisories@github.com"}, {"url": "https://github.com/bunkerity/bunkerweb/pull/3710", "source": "security-advisories@github.com"}, {"url": "https://github.com/bunkerity/bunkerweb/releases/tag/v1.6.13", "source": "security-advisories@github.com"}, {"url": "https://github.com/bunkerity/bunkerweb/security/advisories/GHSA-q54j-5484-pvjm", "source": "security-advisories@github.com"}, {"url": "https://github.com/bunkerity/bunkerweb/security/advisories/GHSA-q54j-5484-pvjm", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Received", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-350"}]}], "descriptions": [{"lang": "en", "value": "BunkerWeb is an open-source, next-generation Web Application Firewall. Prior to 1.6.13, the blacklist, greylist, and antibot modules in src/common/core/blacklist/blacklist.lua, src/common/core/greylist/greylist.lua, and src/common/core/antibot/antibot.lua trust PTR suffix matches in IGNORE_RDNS, GREYLIST_RDNS, and ANTIBOT_IGNORE_RDNS without using get_ips to confirm that the hostname resolves to the client address. An unauthenticated remote attacker who controls a PTR record can spoof a trusted suffix to bypass rDNS-based blacklisting, gain greylist treatment, or skip an antibot challenge. This issue is fixed in version 1.6.13."}], "lastModified": "2026-08-20T19:17:03.637", "sourceIdentifier": "security-advisories@github.com"}