CWE-347— Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.— MITRE CWE catalog
1,005 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-347page 7 of 21
- CVE-2025-9210HIGHCVSS 8.1EG 8.12026-08-18
Missing signature validation in JSON Web Tokens in Otalio Ship Property Management System versions before 2.22.0 allows authenticated attackers to escalate privileges via tampering with JWTs
- CVE-2026-18500HIGHCVSS 8.1EG 8.12026-08-15
@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…
- CVE-2026-15556HIGHCVSS 8.1EG 8.12026-08-11
A flaw was found in Picketlink's SP signature validation; a SAML response containing zero assertion elements matching the signature check can allow an attacker to forge a SAML response and auth as any principal with any roles on the protec…
- CVE-2026-18092HIGHCVSS 8.1EG 8.12026-08-03
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, attr…
- CVE-2026-11348HIGHCVSS 8.1EG 8.12026-07-07
Improper verification of cryptographic signature vulnerability in HAVELSAN Inc. Liman MYS allows Fake the Source of Data. This issue affects Liman MYS: before release.Master.1107.
- CVE-2026-11800HIGHCVSS 8.1EG 8.12026-06-25
A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can creat…
- CVE-2026-10795HIGHCVSS 8.1EG 8.12026-06-11
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 insuffi…
- CVE-2026-42602HIGHCVSS 8.1EG 8.12026-05-13
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 configur…
- CVE-2026-0265HIGHCVSS 8.1EG 8.12026-05-13
An authentication bypass vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to bypass authentication controls when Cloud Authentication Service (CAS) is enabled. The risk is hig…
- CVE-2026-5466HIGHCVSS 8.1EG 8.12026-04-10
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 messa…
- CVE-2026-40070HIGHCVSS 8.1EG 8.12026-04-09
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 content…
- CVE-2026-34840HIGHCVSS 8.1EG 8.12026-04-02
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. isSignatu…
- CVE-2026-34377HIGHCVSS 8.1EG 8.12026-03-31
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…
- CVE-2026-4478HIGHCVSS 8.1EG 8.12026-03-20
A vulnerability was identified in Yi Technology YI Home Camera 2 2.1.1_20171024151200. This impacts an unknown function of the file home/web/ipc of the component HTTP Firmware Update Handler. The manipulation leads to improper verification…
- CVE-2026-1529HIGHCVSS 8.1EG 8.12026-02-09
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 verificati…
- CVE-2026-25793HIGHCVSS 8.1EG 8.12026-02-06
Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates (which is not the default configuration), it is possible to evade a blocklist entry created against the fingerprint of a certifica…
- CVE-2025-65295HIGHCVSS 8.1EG 8.12025-12-10
Multiple vulnerabilities in Aqara Hub firmware update process in the Camera Hub G3 4.1.9_0027, Hub M2 4.3.6_0027, and Hub M3 4.3.6_0025 devices, allow attackers to install malicious firmware without proper verification. The device fails to…
- CVE-2025-55278HIGHCVSS 8.1EG 8.12025-11-05
Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. As a result, an attacker could potentia…
- CVE-2025-12295HIGHCVSS 8.1EG 8.12025-10-27
A weakness has been identified in D-Link DAP-2695 2.00RC13. The affected element is the function sub_40C6B8 of the component Firmware Update Handler. Executing manipulation can lead to improper verification of cryptographic signature. The …
- CVE-2024-49365HIGHCVSS 8.1EG 8.12025-07-01
tiny-secp256k1 is a tiny secp256k1 native/JS wrapper. Prior to version 1.1.7, a malicious JSON-stringifyable message can be made passing on verify(), when global Buffer is the buffer package. This affects only environments where require('b…
- CVE-2025-27813HIGHCVSS 8.1EG 8.12025-04-10
MSI Center before 2.0.52.0 has Missing PE Signature Validation.
- CVE-2025-23206HIGHCVSS 8.1EG 8.12025-01-17
The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. Users who use IAM OIDC custom resource provider package will downl…
- CVE-2023-52043HIGHCVSS 8.1EG 8.12024-04-03
An issue in D-Link COVR 1100, 1102, 1103 AC1200 Dual-Band Whole-Home Mesh Wi-Fi System (Hardware Rev B1) truncates Wireless Access Point Passwords (WPA-PSK) allowing an attacker to gain unauthorized network access via weak authentication c…
- CVE-2023-43660HIGHCVSS 8.1EG 8.12023-09-27
Warpgate is a smart SSH, HTTPS and MySQL bastion host for Linux that doesn't need special client apps. The SSH key verification for a user can be bypassed by sending an SSH key offer without a signature. This allows bypassing authenticatio…
- CVE-2022-24759HIGHCVSS 8.1EG 8.12022-03-17
`@chainsafe/libp2p-noise` contains TypeScript implementation of noise protocol, an encryption protocol used in libp2p. `@chainsafe/libp2p-noise` before 4.1.2 and 5.0.3 does not correctly validate signatures during the handshake process. Th…
- CVE-2021-3051HIGHCVSS 8.1EG 8.12021-09-08
An improper verification of cryptographic signature vulnerability exists in Cortex XSOAR SAML authentication that enables an unauthenticated network-based attacker with specific knowledge of the Cortex XSOAR instance to access protected re…
- CVE-2020-11539HIGHCVSS 8.1EG 8.12020-04-22
An issue was discovered on Tata Sonata Smart SF Rush 1.12 devices. It has been identified that the smart band has no pairing (mode 0 Bluetooth LE security level) The data being transmitted over the air is not encrypted. Adding to this, the…
- CVE-2019-16732HIGHCVSS 8.1EG 8.12019-12-13
Unencrypted HTTP communications for firmware upgrades in Petalk AI and PF-103 allow man-in-the-middle attackers to run arbitrary code as the root user.
- CVE-2019-10201HIGHCVSS 8.1EG 8.12019-08-14
It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can b…
- CVE-2018-7711HIGHCVSS 8.1EG 8.12018-03-05
HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during…
- CVE-2017-18122HIGHCVSS 8.1EG 8.12018-02-02
A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that t…
- CVE-2017-16853HIGHCVSS 8.1EG 8.12017-11-16
The DynamicMetadataProvider class in saml/saml2/metadata/impl/DynamicMetadataProvider.cpp in OpenSAML-C in OpenSAML before 2.6.1 fails to properly configure itself with the MetadataFilter plugins and does not perform critical security chec…
- CVE-2017-16852HIGHCVSS 8.1EG 8.12017-11-16
shibsp/metadata/DynamicMetadataProvider.cpp in the Dynamic MetadataProvider plugin in Shibboleth Service Provider before 2.6.1 fails to properly configure itself with the MetadataFilter plugins and does not perform critical security checks…
- CVE-2017-13083HIGHCVSS 8.1EG 8.12017-10-18
Akeo Consulting Rufus prior to version 2.17.1187 does not adequately validate the integrity of updates downloaded over HTTP, allowing an attacker to easily convince a user to execute arbitrary code
- CVE-2017-6445HIGHCVSS 8.1EG 8.12017-03-05
The auto-update feature of Open Embedded Linux Entertainment Center (OpenELEC) 6.0.3, 7.0.1, and 8.0.4 uses neither encrypted connections nor signed updates. A man-in-the-middle attacker could manipulate the update packages to gain root ac…
- CVE-2022-39300HIGHCVSS 7.7EG 8.12022-10-13
node SAML is a SAML 2.0 library based on the SAML implementation of passport-saml. A remote attacker may be able to bypass SAML authentication on a website using passport-saml. A successful attack requires that the attacker is in possessio…
- CVE-2022-39299HIGHCVSS 7.4EG 8.12022-10-12
Passport-SAML is a SAML 2.0 authentication provider for Passport, the Node.js authentication library. A remote attacker may be able to bypass SAML authentication on a website using passport-saml. A successful attack requires that the attac…
- CVE-2026-50722HIGHCVSS 5.9EG 8.12026-07-02
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 us…
- CVE-2026-50721HIGHCVSS 5.9EG 8.12026-07-02
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 remot…
- CVE-2026-41431HIGHCVSS 8.0EG 8.02026-05-11
Zen is a firefox-based browser. Prior to 1.19.9b, Zen Browser ships a Mozilla Application Resource (MAR) updater (org.mozilla.updater) that has had all MAR signature verification stripped from the Firefox codebase it was forked from. The M…
- CVE-2025-2764HIGHCVSS 8.0EG 8.02025-04-23
CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of CarlinKit CPC200-CC…
- CVE-2026-77805HIGHCVSS 7.9EG 7.92026-10-05
In Progress® Telerik® Fiddler® Classic for Windows, versions prior to v6.0.20262.10021, the integrity check applied to the external helper tools launched by the application is insufficient. Before executing a helper tool, the applicatio…
- CVE-2026-73776HIGHCVSS 7.9EG 7.92026-09-01
A signature verification bypass vulnerability exists in the command line interface of AOS-CX. Successful exploitation could allow an authenticated malicious actor with administrative privileges to execute arbitrary code on the underlying o…
- CVE-2026-97799HIGHCVSS 7.8EG 7.82026-10-13
Improper verification of cryptographic signature in Windows Audio Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69650HIGHCVSS 7.8EG 7.82026-10-13
Improper verification of cryptographic signature in Windows Key Distribution Center allows an authorized attacker to elevate privileges locally.
- CVE-2026-84271HIGHCVSS 7.8EG 7.82026-10-08
IBM Guardium Data Protection 12.2 is vulnerable to a signature verification bypass in the patch installer. An attacker with local access could exploit this vulnerability to execute arbitrary code with root privileges.
- CVE-2026-79807HIGHCVSS 7.8EG 7.82026-10-06
A missing integrity verification vulnerability in the Windows client software for ClearPass Policy Manager could allow malicious users on a local instance to elevate their user privileges. A successful exploit could allow these users to ex…
- CVE-2026-78860HIGHCVSS 7.8EG 7.82026-10-05
An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via the storage of information in plaintext
- CVE-2026-28590HIGHCVSS 7.8EG 7.82026-09-08
In multiple locations, there is a possible improper encryption key validation due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed…
- CVE-2026-14837HIGHCVSS 7.8EG 7.82026-07-27
Multiple Lenze products are affected by an improper signature verification vulnerability in the SSH enablement mechanism. A low-privileged local attacker can bypass verification of the SSH enable file signature and enable SSH access on the…
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