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Affected Vendors & Products
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Solution
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Workaround
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Thu, 20 Aug 2026 19:30:00 +0000
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ssvc
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Thu, 20 Aug 2026 19:00:00 +0000
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| Description | 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. | |
| Title | BunkerWeb: rDNS bypass via missing forward-confirmation (FCrDNS) in blacklist, greylist, and antibot | |
| Weaknesses | CWE-350 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-20T19:00:33.894Z
Reserved: 2026-08-17T20:49:21.599Z
Link: CVE-2026-75514
Updated: 2026-08-20T18:59:19.086Z
Status : Received
Published: 2026-08-20T19:17:03.637
Modified: 2026-08-20T19:17:03.637
Link: CVE-2026-75514
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OpenCVE Enrichment
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