Vulnerabilities of Red Hat Red Hat OpenStack Platform 18.0

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CVE list

CVE	Summary	Score	Published
CVE-2026-39821	The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label	9.6 Critical	May 22, 2026
CVE-2026-42508	Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation	9.1 Critical	May 22, 2026
CVE-2026-46595	Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…	10.0 Critical	May 22, 2026
CVE-2026-39829	The RSA and DSA public key parsers did not enforce size limits on key parameters	7.5 High	May 22, 2026
CVE-2026-39830	A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the…	9.1 Critical	May 22, 2026
CVE-2026-39835	SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be…	5.3 Medium	May 22, 2026
CVE-2026-39828	When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were…	6.3 Medium	May 22, 2026
CVE-2026-39832	When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not…	9.1 Critical	May 22, 2026
CVE-2026-41292	NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to…	6.6 Medium	May 20, 2026
CVE-2026-31072	The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to…	9.8 Critical	May 19, 2026
CVE-2026-33811	When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a…	7.5 High	May 7, 2026
CVE-2026-39820	Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion…	7.5 High	May 7, 2026
CVE-2026-42499	Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322	7.5 High	May 7, 2026
CVE-2026-33814	When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it…	7.5 High	May 7, 2026
CVE-2026-34956	Openvswitch: open vswitch: denial of service via malformed ftp epasv command	5.9 Medium	May 5, 2026
CVE-2026-43869	Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift	Not rated	May 5, 2026
CVE-2026-42997	An issue was discovered in idrac in OpenStack Ironic before 35.0.1	7.7 High	May 5, 2026
CVE-2026-42154	Prometheus is an open-source monitoring system and time series database	7.5 High	May 4, 2026
CVE-2026-42151	Prometheus is an open-source monitoring system and time series database	7.5 High	May 4, 2026
CVE-2026-43001	An issue was discovered in OpenStack Keystone before 29.0.2	7.9 High	May 1, 2026
CVE-2026-41602	Integer Overflow or Wraparound vulnerability in Apache Thrift TFramedTransport Go language implementation This issue…	Not rated	Apr 28, 2026
CVE-2025-48431	Mismatched Memory Management Routines vulnerability in Apache Thrift c_glib language bindings	Not rated	Apr 28, 2026
CVE-2026-32280	During chain building, the amount of work that is done is not correctly limited when a large number of intermediate…	7.5 High	Apr 8, 2026
CVE-2026-32283	If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection…	7.5 High	Apr 8, 2026
CVE-2026-33810	When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to…	7.5 High	Apr 8, 2026

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