VYPR

CWE-347

Improper Verification of Cryptographic Signature

BaseDraft

Description

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Hierarchy (View 1000)

Parents

Children

none

Related attack patterns (CAPEC)

CAPEC-463 · CAPEC-475

CVEs mapped to this weakness (884)

page 21 of 45
  • CVE-2020-26122HigDec 7, 2020
    risk 0.47cvss 7.2epss 0.01

    Inspur NF5266M5 through 3.21.2 and other server M5 devices allow remote code execution via administrator privileges. The Baseboard Management Controller (BMC) program of INSPUR server is weak in checking the firmware and lacks the signature verification mechanism, the attacker…

  • CVE-2026-52767HigSep 5, 2026
    risk 0.46cvss 8.2epss 0.00

    YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::verifySignature() checks the result of PHP's openssl_verify() with a loose boolean negation - if (!openssl_verify(...)) { throw ... }. PHP's openssl_verify has four…

  • CVE-2026-82461HigAug 29, 2026
    risk 0.46cvss 8.1epss 0.00

    pac4j-oidc before 6.5.6 fails to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client roles. Attackers can forge access tokens with administrative roles paired with valid ID tokens to bypass authorization checks in applications…

  • CVE-2026-54330HigAug 28, 2026
    risk 0.46cvss 8.1epss 0.00

    Ceph is an open-source distributed storage platform providing object, block, and file storage. In versions prior to 20.2.4 and 19.2.6, the Ceph Object Gateway (RGW) SigV4 handler does not reject requests that carry x-amz-* headers absent from the signed header set, allowing…

  • CVE-2026-18500HigAug 15, 2026
    risk 0.46cvss 8.1epss 0.00

    @fastify/jwt is a JSON Web Token plugin for Fastify. In versions before 10.2.2, a per-request verification key passed to request.jwtVerify({ key }) is silently overridden by the plugin's globally configured secret, because the option merge applies the global key last.…

  • CVE-2026-18092HigAug 3, 2026
    risk 0.46cvss 8.1epss 0.00

    Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass via XML signature wrapping because new_from_xml reads assertion identity with document-wide XPath instead of the signed subtree. new_from_xml reads the NameID, attribute values, SessionIndex, audience and…

  • CVE-2026-53501HigJul 31, 2026
    risk 0.46cvss 8.2epss 0.00

    Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor’s HMAC validation can be bypassed due to the use of Python’s .replace() when removing the signature from the URL before validation. Since .replace() removes all occurrences of the…

  • CVE-2026-54736HigJul 10, 2026
    risk 0.46cvss —epss 0.00

    Phalcon is a high-performance, full-stack PHP framework. Prior to 5.14.1, Phalcon\Encryption\Crypt::decrypt compares the attacker-supplied HMAC tag against the freshly computed HMAC using PHP/Zephir identity comparison, which lowers to a byte-wise comparison that returns early…

  • CVE-2026-50722HigJul 2, 2026
    risk 0.46cvss 8.1epss 0.00

    Libreswan, via the function RSA_authenticate_hash_signature_pkcs1_1_5_rsa(), did not correctly verify the DER encoding of the ASN.1 digest when the IKEv2 AUTH payload was encoded using RSASSA-PKCS1-v1_5 (RFC 8017). A remote attacker can use a variation on the Bleichenbacher…

  • CVE-2026-50721HigJul 2, 2026
    risk 0.46cvss 8.1epss 0.00

    Libreswan, via the function RSA_authenticate_hash_signature_raw_rsa(), did not correctly verify the length of the authentication hash when the SIG payload of an IKEv1 packet was encoded using PKCS #1 RSA Encryption as per RFC 2313. A remote attacker can use a variation on the…

  • CVE-2026-10795HigJun 11, 2026
    risk 0.46cvss 8.1epss 0.04

    The UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.26.4 via the UpdraftPlus_Remote_Communications_V2::wp_loaded function. This is due to insufficient validation of the remote…

  • CVE-2024-36334HigMay 15, 2026
    risk 0.46cvss —epss 0.00

    Improper verification of cryptographic signature in the Radeon RGB tool could allow a malicious file placed in the installation directory to be run with elevated privileges potentially leading to arbitrary code execution.

  • CVE-2026-42602HigMay 13, 2026
    risk 0.46cvss 8.1epss 0.00

    azureauthextension is the Azure Authenticator Extension. From 0.124.0 to 0.150.0, a server-side authentication bypass in azureauthextension allows any party who holds a single valid Azure access token for any scope the collector's configured identity can mint for to authenticate…

  • CVE-2026-41669HigMay 7, 2026
    risk 0.46cvss 8.2epss 0.00

    Admidio is an open-source user management solution. Prior to version 5.0.9, the Admidio SAML Identity Provider implementation discards the return value of its validateSignature() method at both call sites (handleSSORequest() line 418 and handleSLORequest() line 613). The method…

  • CVE-2026-38651HigApr 28, 2026
    risk 0.46cvss 8.2epss 0.00

    Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0. The VerifyHostToken function in logic/jwts.go fails to validate the JWT signature when verifying host tokens. An attacker can forge a JWT signed with any arbitrary key and use it to impersonate any…

  • CVE-2026-5466HigApr 10, 2026
    risk 0.46cvss 8.1epss 0.00

    wolfSSL's ECCSI signature verifier `wc_VerifyEccsiHash` decodes the `r` and `s` scalars from the signature blob via `mp_read_unsigned_bin` with no check that they lie in `[1, q-1]`. A crafted forged signature could verify against any message for any identity, using only…

  • CVE-2026-40070HigApr 9, 2026
    risk 0.46cvss 8.1epss 0.00

    BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClient#acquire_certificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisition_protocol: 'direct',…

  • CVE-2026-34840HigApr 2, 2026
    risk 0.46cvss 8.1epss 0.00

    OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.42, OneUptime's SAML SSO implementation (App/FeatureSet/Identity/Utils/SSO.ts) has decoupled signature verification and identity extraction. isSignatureValid() verifies the first …

  • CVE-2026-34377HigMar 31, 2026
    risk 0.46cvss 8.1epss 0.00

    ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-consensus version 5.0.1, a logic error in Zebra's transaction verification cache could allow a malicious miner to induce a consensus split. By matching a valid transaction's txid while…

  • CVE-2026-1529HigFeb 9, 2026
    risk 0.46cvss 8.1epss 0.00

    A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully…