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| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-44390 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to perform name compression for. Malicious upstream responses with very large RRsets with records that don't share a suffix above the root can cause Unbound to spend a considerable time applying name compression to downstream replies. This can lead to degraded performance and eventually denial of service in well orchestrated attacks. An adversary can exploit the vulnerability by querying Unbound for the specially crafted contents of a malicious zone with very large RRsets. Before Unbound replies to the query it will try to apply name compression which was an unbounded operation that could lock the CPU until the whole packet was complete. A compression limit was introduced in 1.21.1 for this but it didn't account for the case where records would not share any suffix above the root. That causes Unbound to go in a different code path because of the compression tree lookup failure and eventually not increment the compression counter for those operations. Unbound 1.25.1 contains a patch with a fix that increments the compression counter regardless of the compression tree lookup. This is a complement fix to CVE-2024-8508. | ||||
| CVE-2026-42960 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to poisoning via promiscuous records for the authority section. Promiscuous RRSets that complement DNS replies in the authority section can be used to trick Unbound to cache such records. If an adversary is able to attach such records in a reply (i.e., spoofed packet, fragmentation attack) he would be able to poison Unbound's cache. A malicious actor can exploit the possible poisonous effect by injecting RRSets other than NS that are also accompanied by address records in a reply, for example MX. This could be achieved by trying to spoof a reply packet or fragmentation attacks. Unbound would then accept the relative address records in the additional section and cache them if the authority RRSet has enough trust at this point, i.e., in-zone data for the delegation point. Unbound 1.25.1 contains a patch with a fix that disregards address records from the additional section if they are not explicitly relevant only to authority NS records, mitigating the possible poison effect. This is a complement fix to CVE-2025-11411. | ||||
| CVE-2026-42959 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets for ADDITIONAL section rrsets. DNAME duplication could increase the ANSWER section count and authority filtering could decrease the AUTHORITY section count and create an uninitialized array slot. Combining these two, the validator later dereferences this uninitialized pointer, causing an immediate process crash. An adversary controlling a DNSSEC-signed domain can trigger this bug with a single query by configuring a DNAME chain with unsigned CNAMEs and a response containing unsigned AUTHORITY records alongside signed ADDITIONAL glue records. Unbound 1.25.1 contains a patch with a fix to use the proper counters to calculate the write offsets. | ||||
| CVE-2026-42944 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options ('nsid', 'answer-cookie', 'pad-responses' (default)) need to be enabled for the vulnerability to be exploited. An adversary who can query Unbound can exploit the vulnerability by attaching multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options to the query. A flaw in the size calculation of the EDNS field truncates the correct value which allows the encoder to overflow the available space when writing. Those two combined lead to a heap overflow write of Unbound controlled data and eventually a crash. Unbound 1.25.1 contains a patch with a fix to de-duplicate the EDNS options and a fix to prevent truncation of the EDNS field size calculation. | ||||
| CVE-2026-42923 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the attack. An adversary that controls a DNSSEC signed zone can exploit this by signing NSEC3 records with acceptably high iterations for child delegations and querying a vulnerable Unbound. Unbound will keep performing the allowed hash calculations on the NSEC3 records and will not limit the work by the mitigation introduced in 1.19.1. As a side effect, a global lock for the negative cache will be held for the duration of the hashing, blocking other threads that need to consult the negative cache. Coordinated attacks could raise the vulnerability to denial of service. Unbound 1.25.1 contains a patch with a fix to bound the vulnerable code path with the existing limit for NSEC3 hash calculations. | ||||
| CVE-2026-42534 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade resolution performance. Retransmits of the same query could renew the age of slow running queries and not allow the jostle logic to see them as aged and potential targets for replacement with new queries. An adversary who can query a vulnerable Unbound and who can control a domain name server that replies slowly and/or maliciously to Unbound's queries can exploit the vulnerability and degrade the resolution performance of Unbound. When Unbound's 'num-queries-per-thread' reaches its limit, the jostle logic kicks in. When a new query comes in, half of the available queries that are also slow to resolve are candidates for replacement. The vulnerability then happens because duplicate queries that need resolution would skew the aging result by using the timestamp of the latest duplicate query instead of the original one that started the resolution effort. Cache and local data response performance remains unaffected. Coordinated attacks could raise this to a denial of resolution service. Unbound 1.25.1 contains a patch with a fix to attach an initial, non-updatable start time for incoming queries that allow the jostle logic to work as intended. | ||||
| CVE-2026-41292 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. An adversary sending queries with too many EDNS options can hold Unbound threads hostage while they are parsing and creating internal data structures for the options. Coordinated attacks can result in degradation and/or denial of service. Unbound 1.25.1 contains a patch with a fix to limit acceptable incoming EDNS options (100). | ||||
| CVE-2026-33278 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the vulnerability by controlling a malicious signed zone and querying a vulnerable Unbound. When DS sub-queries need to suspend validation due to NSEC3 computational budget exhaustion (introduced in Unbound 1.19.1), Unbound deep-copies response messages to preserve them across memory region teardown. A struct-assignment bug overwrites the destination's pointer with the source's pointer. After the sub-query region is freed, the resumed validator dereferences this dangling pointer, triggering a crash or potentially enabling arbitrary code execution. Unbound 1.25.1 contains a patch with a fix to preserve the correct pointer when deep copying the data structure. | ||||
| CVE-2026-32792 | 2026-05-20 | N/A | ||
| NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support ('--enable-dnscrypt'). A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit the vulnerability with a single bad DNSCrypt query that its decrypted plaintext consists entirely of '0x00' bytes and does not contain the expected '0x80' marker. Unbound would then start reading more bytes than necessary until it finds a non-'0x00' byte. Based on the underlying memory allocator and the memory layout, it could lead to heap overflow while reading followed by a crash. Likelihood of a crash is low, since it relies heavily on the underlying memory allocator and the memory layout. If the heap overflow does not happen, Unbound's later packet checks will deny the packet. Unbound 1.25.1 contains a patch with a fix to bound reading in the given buffer space. | ||||
| CVE-2023-7103 | 1 Zksoftware | 1 Uface 5 | 2026-05-20 | 9.8 Critical |
| Authentication Bypass by Primary Weakness vulnerability in ZKSoftware Biometric Security Solutions UFace 5 allows Authentication Bypass. This issue affects UFace 5: through 12022024. | ||||
| CVE-2026-9064 | 1 Redhat | 2 Directory Server, Enterprise Linux | 2026-05-20 | 7.5 High |
| A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service. | ||||
| CVE-2026-44933 | 2026-05-20 | 7.8 High | ||
| `PluginScript` attempts to `chroot` the plugin to the `repoManagerRoot`, this root is frequently `/` (the system root) in standard configurations or when using `--root`. If the chroot target is `/`, it is a no-op, allowing the traversed path to execute host binaries (like `/bin/bash`) with root privileges. | ||||
| CVE-2026-5586 | 1 Zhongyu09 | 1 Openchatbi | 2026-05-20 | 6.3 Medium |
| A vulnerability was determined in zhongyu09 openchatbi up to 0.2.1. The impacted element is an unknown function of the component Multi-stage Text2SQL Workflow. Executing a manipulation of the argument keywords can lead to sql injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. | ||||
| CVE-2026-5200 | 2 Acyba, Wordpress | 2 Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For Wordpress, Wordpress | 2026-05-20 | 8.8 High |
| The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 10.8.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify privileged AcyMailing configuration, export subscriber secret keys, and chain these actions into administrator account takeover when a target administrator email address is known. | ||||
| CVE-2023-6676 | 1 Nationalkeep | 1 Cybermath | 2026-05-20 | 8.8 High |
| Cross-Site Request Forgery (CSRF) vulnerability in National Keep Cyber Security Services CyberMath allows Cross Site Request Forgery. This issue affects CyberMath: from v1.4 before v1.5. | ||||
| CVE-2023-6677 | 1 Oduyo | 1 Online Collection | 2026-05-20 | 9.8 Critical |
| Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Oduyo Financial Technology Online Collection allows SQL Injection. This issue affects Online Collection: before v.1.0.2. | ||||
| CVE-2023-6724 | 1 Simgesel | 1 Hearing Tracking System | 2026-05-20 | 8.8 High |
| Authorization Bypass Through User-Controlled Key vulnerability in Software Engineering Consultancy Machine Equipment Limited Company Hearing Tracking System allows Authentication Abuse. This issue affects Hearing Tracking System: before for IOS 7.0, for Android Latest release 1.0. | ||||
| CVE-2023-6919 | 1 Biges | 18 Vg-255-bv, Vg-255-bv Firmware, Vg-255-df and 15 more | 2026-05-20 | 7.5 High |
| Path Traversal: '/../filedir' vulnerability in Biges Safe Life Technologies Electronics Inc. VGuard allows Absolute Path Traversal. This issue affects VGuard: before V500.0003.R008.4011.C0012.B351.C. | ||||
| CVE-2026-2955 | 2 Wordpress, Wupsales | 2 Wordpress, Ai Chatbot & Workflow Automation By Aiwu | 2026-05-20 | 6.4 Medium |
| The AI Chatbot & Workflow Automation by AIWU plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'X-Forwarded-For' header in versions up to, and including, 1.4.14 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: Practical exploitation is constrained due to a 20-character storage limit. | ||||
| CVE-2026-47783 | 1 Memcached | 1 Memcached | 2026-05-20 | 8.1 High |
| In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass. | ||||