CVE-2026-42784: Improper Verification of Cryptographic Signature

A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an...

Astra Linux – Vulnerability in gnupg2

GnuPG versions up to 2.3.6 allow for signature forgery in unusual situations where an attacker possesses secret-key information from a victim’s keyring, and other constraints such as the use of GPGME are met. This can be achieved by injecting malicious data into the command line’s status line...

Astra Linux – Vulnerability in LibreOffice

LibreOffice supports digital signatures for ODF documents and macros within documents. It provides visual indicators that confirm that the document has not been altered since the last signature, and that the signature is valid. A vulnerability in certificate validation in LibreOffice allowed...

Astra Linux – Vulnerability in node-browserify-sign

“browserify-sign” is a package that duplicates the functionality of Node’s crypto public key functions. Much of this functionality is based on Fedor Indutny’s work on “indutny/tls.js”. There is a issue with upper-bound checking in the “dsaVerify” function, which allows an attacker to create...

DEBIAN-CVE-2026-87733

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

CVE-2026-87733

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

CVE-2026-87733

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

CVE-2026-87733

mirage-crypto-ec for OCaml , versions before 2.2.0 , contains a flaw in the ECDSA functions {P256, P384, P521}.Dsa.pub_of_octets. The function accepts 0x00 —the encoding of the point at infinity —as a valid public key, allowing an attacker to forge ECDSA signatures without knowledge of the privat...

EUVD-2026-74619

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

CVE-2026-87733

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

Linux Distros Unpatched Vulnerability : CVE-2026-87733

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of...

PT-2026-88812

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pub of octets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

CVE-2026-87733: Improper Certificate Validation

An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions P256,P384,P521.Dsa.pubofoctets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key...

CVE-2026-72889

A flaw was found in Net::OAuth for Perl. A remote attacker can exploit this vulnerability by manipulating the signature algorithm used for verification. By specifying a weaker algorithm, such as HMAC-SHA1 or HMAC-SHA256, in the incoming message, the attacker can force the system to use a...

CVE-2026-67276

RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the exponent. Because signature verification uses the client-supplied key, an attacker knowing an authorized RSA modulus can...

CVE-2026-67278

MikroTik RouterOS (7.x branch) is vulnerable to a cryptographic signature verification flaw where it accepts malformed RSA/PKCS#1 v1.5 signatures. Because the trust store includes an e=3 root CA , an attacker who can redirect outbound TLS connections can use the root's public certificate to forge...

EUVD-2026-72024

RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the exponent. Because signature verification uses the client-supplied key, an attacker knowing an authorized RSA modulus can...

CVE-2026-67276 SSH user impersonation possible in Mikrotik RouterOS

RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the exponent. Because signature verification uses the client-supplied key, an attacker knowing an authorized RSA modulus can...

SUSE CVE-2026-33894

Forge also called node-forge is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS1 v1.5 signature verification accepts forged signatures for low public exponent keys e=3. Attackers can forge signatures by stuffing “garbage” bytes within the ASN...

SUSE CVE-2026-85393

node-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS1 v1.5 signature verification. Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures for arbitrary messages using low-exponent RSA keys. This is an...