Powerdns vulnerabilities, page 5

129 vulnerabilities

Known vulnerabilities in Powerdns products, newest first, with CVSS severity, EPSS, KEV listings and ransomware use, across 10 products.

5.9MediumCVE-2026-42388debian · pdns-recursor +2 moreMissing input validation for catalog zonesIncomplete validation of the SOA record present in a catalog zone might lead to a crash.EPSS0.48%7.5HighCVE-2026-42002debian · pdns +2 moreConcurrency and locking defects in GSS-TSIGEPSS0.58%5.9MediumCVE-2026-42387debian · pdns-recursor +2 moreInsufficient input validation in ZoneToCacheA malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.EPSS0.48%3.7LowCVE-2026-42004debian · dnsdist +2 moreEDNS options smugglingAn attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.EPSS0.22%6.5MediumCVE-2026-42396debian · pdns +2 moreInsufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to FailEPSS0.77%5.3MediumCVE-2026-42390debian · pdns-recursor +2 moreZONEMD validation can be bypassedAn invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.EPSS0.30%8.6HighCVE-2026-42000debian · pdns +2 moreInsufficient Validation of Names During AXFREPSS0.54%4.3MediumCVE-2026-42005debian · dnsdist +6 moreInsufficient input validation of internal web serverAn attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.EPSS0.63%5.3MediumCVE-2026-42389debian · pdns-recursor +2 moreReject more queries with invalid header valuesThis fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.EPSS0.30%7.5HighCVE-2026-42001debian · pdns +2 moreInsufficient Validation of Autoprimary SOA QueriesEPSS0.80%5.3MediumCVE-2026-0398debian · pdns-recursor +2 moreCrafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in RecursorEPSS0.34%4.3MediumCVE-2026-0396debian · dnsdist +2 moreHTML injection in the web dashboardAn attacker might be able to inject HTML content into the internal web dashboard by sending crafted DNS queries to a DNSdist instance where domain-based dynamic rules have been enabled via either DynBlockRulesGroup:setSuffixMatchRule or DynBlockRulesGroup:setSuffixMatchRuleFFI.EPSS0.14%4.3MediumCVE-2026-0397debian · dnsdist +2 moreInformation disclosure via CORS misconfigurationWhen the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.EPSS0.16%7.5HighCVE-2026-27853debian · dnsdist +2 moreOut-of-bounds write when rewriting large DNS packetsAn attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service.EPSS1.50%7.5HighCVE-2026-27854debian · dnsdist +2 moreUse after free when parsing EDNS options in LuaAn attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.EPSS1.34%8.2HighCVE-2026-24028debian · dnsdist +2 moreOut-of-bounds read when parsing DNS packets via LuaAn attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential information disclosure.EPSS1.03%5.3MediumCVE-2026-24027debian · pdns-recursor +2 moreCrafted zones can lead to increased incoming network trafficEPSS0.45%6.5MediumCVE-2026-24029debian · dnsdist +2 moreDNS over HTTPS ACL bypassWhen the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL.EPSS0.15%7.5HighCVE-2026-24030debian · dnsdist +2 moreUnbounded memory allocation for DoQ and DoH3An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.EPSS0.54%5.9MediumCVE-2026-33261debian · pdns-recursor +2 moreNull pointer accces in aggressive NSEC(3) cacheA zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.EPSS0.24%