libXfont2: PCF Font Parsing Heap Buffer Overflow

A flaw was found in libXfont2. A specially crafted PCF Portable Compiled Format font file, when processed by libXfont2, can lead to a buffer overflow. This occurs because the font parsing process does not properly validate the size of a bitmap buffer against the glyph metrics provided in the...

CVE-2026-12259

The CVE affects nltk 3.9.4: nltk.downloader.Downloader._download_package() can write package bytes to disk and may extract them before SHA-256/MD5 checks, enabling tampering via compromised mirrors or proxies. This could lead to installation of attacker-controlled package bytes (potentially malic...

Important: Red Hat Security Advisory: rhc security update

An update for rhc is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

Improper Validation of Integrity Check Value

Overview org.bouncycastle:bcprov-jdk12 is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value enabling MAC forgery, in the IESEngine class when initialized through the 4-argument init without a block...

Improper Validation of Integrity Check Value

Overview org.bouncycastle:bcprov-jdk15to18 is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value enabling MAC forgery, in the IESEngine class when initialized through the 4-argument init without a blo...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value enabling MAC forgery, in the IESEngine class when initialized through the 4-argument init without a block cipher, where the KDF is seeded only from the ECDH shared secret and split into a...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value enabling MAC forgery, in the IESEngine class when initialized through the 4-argument init without a block cipher, where the KDF is seeded only from the ECDH shared secret and split into a...

Improper Validation of Integrity Check Value

Overview org.bouncycastle:bcprov-debug-jdk15on is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value enabling MAC forgery, in the IESEngine class when initialized through the 4-argument init without a...

Improper Certificate Validation

Overview org.bouncycastle:bcprov-ext-jdk15on is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then trea...

Improper Certificate Validation

Overview org.bouncycastle:bcprov-jdk15to18 is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats the certificate as unrevoked when no SingleResponse entry matches its CertID, without...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats the certificate as unrevoked when no SingleResponse entry matches its CertID, without...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats the certificate as unrevoked when no SingleResponse entry matches its CertID, without...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats the certificate as unrevoked when no SingleResponse entry matches its CertID, without...

Improper Certificate Validation

Overview org.bouncycastle:bcprov-ext-jdk14 is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats...

Improper Certificate Validation

Overview org.bouncycastle:bcprov-debug-jdk15on is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats the certificate as unrevoked when no SingleResponse entry matches its CertID, without...

Improper Certificate Validation

Overview org.bouncycastle:bcprov-jdk15on is a Java implementation of cryptographic algorithms. Affected versions of this package are vulnerable to Improper Certificate Validation in the check method of ProvOcspRevocationChecker, which verifies a stapled OCSP response's signature and then treats t...