Weakness (CWE)
CWE-347: Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Source: MITRE CWE-347
878 results · Feed
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High 8.1
Apache CloudStack: SAML2 Signature Validation Silently Skipped for Cert-less IdP
Certificate validation failures in SAML authentication in Apache CloudStack 4.20.3.0 and 4.22.1.0 on all platforms allow a malicious agent to forge a SAML response to the management server. The agent will have to spoof the ip address of the IdP or get an url …
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Critical 9.3
Azure Data Factory Elevation of Privilege Vulnerability
Improper verification of cryptographic signature in Azure Data Factory allows an unauthorized attacker to elevate privileges over a network.
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Medium 5.8
Appwrite Templates github-issue-bot Skips Webhook Signature Verification When the X-Hub-Signature-256 Header Is Absent
The github-issue-bot templates in appwrite/templates verify the GitHub webhook signature with an inverted condition. verifyWebhook in node/github-issue-bot/src/github.js and in node-typescript/github-issue-bot/src/github.ts returns "typeof signature !== 'stri…
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Critical 9.8
RDK-B WebUI improper cryptographic signature verification vulnerability
Improper cryptographic signature verification in `jst_functions.c` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote attacker to bypass authentication and obtain administrative access via a forged JWT containing an invalid RSA signature.
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High 7.5
libcrux before 0.0.6 Cryptographic Implementation Bug Fixes
libcrux-ecdh and libcrux-ed25519 before 0.0.6, and libcrux-psq before 0.0.7, contain cryptographic implementation bugs. libcrux-ecdh did not properly check length and clamping during X25519 secret validation (and had a broken clamping check for imported X2551…
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High 7.5
Missing MAC validation in wg(4) packet decryption
After dispatching a decrypt operation to OCF and receiving the result, the wg(4) driver failed to check whether the MAC verification step succeeded. The driver thus silently accepted packets with an invalid Poly1305 authentication tag. A remote attacker who c…
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Critical 9.8
Net::OAuth versions before 0.33 for Perl allow the sender to choose the signature algorithm in verify
Net::OAuth versions before 0.33 for Perl allow the sender to choose the signature algorithm in verify. verify resolves the signature method class from the signature_method parameter of the incoming message. signature_method is required on every request, so th…
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Medium 6.8
The Ingenic T41, and probably also T32, T40, and A1 SoC boot ROMs parse and execute an attacker-controlled init table f…
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Medium 6.4
The Ingenic T31 SoC boot ROM flash-boot verification path compares only a single 32-bit word of the RSA signature outpu…
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Medium 4.8
Lemur : JWT verifier trusts attacker-supplied alg from token header — defense-in-depth gap; chain-dependent ATO with secret disclosure
Lemur manages TLS certificate creation. Prior to 1.9.2, the JWT verifier in lemur/auth/service.py:130-137 used fetch_token_header to read header_data["alg"] from an unverified token and passed that attacker-controlled value to decode_with_multiple_secrets. Py…
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High 8.1
Missing JSON Web Token signature validation in Otalio Ship Property Management System
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
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Critical 9.8CVE-2021-43716 Public exploit
Verification Bypass vulnerability exists in EPSON 150075647YWWV110 EasyMP Network Updater Ver.1.20. The Epson projector…
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High 7.8
uniget CLI: Metadata signature verification only runs when UNIGET_IGNORE_METADATA_SIGNATURE is set
## Summary The sigstore check on `metadata.json` is gated on the wrong side of the condition. `LoadMetadata` in `internal/config/update.go:81` verifies the bundle only when `UNIGET_IGNORE_METADATA_SIGNATURE` is non-empty, so in a normal run, where nobody sets…
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Critical 9.8
openssl_encrypt before 1.4.0 Authentication Bypass via AES-CTR Fallback
openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in pqc.py where AES-GCM decryption failures trigger fallback to unauthenticated AES-CTR mode. Attackers can modify ciphertext in transit to bypass integrity verification and …
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Critical 9.8
openssl_encrypt before 1.4.0 Unverified Key Bundle Encryption
openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to …
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High 8.1
@fastify/jwt vulnerable to authorization bypass via global secret overriding the per-request key
@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 …
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Medium 5.9
Quay: stripe webhook accepts forged events without signature verification in quay
A flaw was found in Red Hat Quay's Stripe billing webhook handler. This vulnerability allows an unauthenticated attacker to forge billing events by sending crafted JSON requests to the `/webhooks/stripe` endpoint without validating the Stripe-Signature header…
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High 7.5
PAX Technology Q80 Application Installer Signature Verification Bypass Remote Code Execution Vulnerability
PAX Technology Q80 Application Installer Signature Verification Bypass Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of PAX Technology Q80. Authentication is not r…
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Low 2.1
kas's late signature validation may allow unnoticed repository manipulations
kas is a setup tool for bitbake based projects. Starting in version 4.8 and prior to version 5.3, kas checks out and processes repositories regarding configuration includes prior to validating signatures of those repositories. This may allow to replace on ori…
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Low 2.1
kas checks out SHA-like git branches as valid commits
kas is a setup tool for bitbake based projects. Prior to version 5.3, when relying solely on a git commit ID (SHA-1 or SHA-256) to qualify if a checkout of a repository is equivalent to the state validated while adding its commit ID to a kas configuration, us…
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High 8.4
Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog
A malicious GOPROXY was previously capable of forging up to two sumdb tiles that allow for a requested module to bypass the GOSUMDB check and persist attacker-controlled module content to a local Go module cache. This attack allows for a malicious GOPROXY to …
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High 7.5
Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the trans…
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Critical 9.8
WordPress Headless Single Sign On plugin <= 1.6 - Bypass Vulnerability vulnerability
Unauthenticated Bypass Vulnerability in Headless Single Sign On <= 1.6 versions.
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High 8.8
Authentication Bypass
Zohocorp ManageEngine Password Manager Pro versions before 13232 and PAM360 versions before 8551 are vulnerable to an authentication bypass vulnerability due to improper SAML validation.
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Low 2.0
Sigstore Java has a vulnerability with bundle verification of integratedTime
sigstore-java is a sigstore java client for interacting with sigstore infrastructure. Version 2.0.0 erroneously removed verification of the integrated (Rekor entry) time) against the Fulcio certificate. Version 2.1.0 re-added this verification with enhancemen…
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High 7.2
Integration credential holders may impersonate users in JFrog Access
A holder of a valid integration credential may impersonate other users under specific conditions.
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High 7.5
Potential improper SAML signature verification in JFrog Artifactory
A user with access to a valid SAML response may impersonate another user under specific conditions.
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High 7.5
In CPSD CryptoPro Secure Disk for Bitlocker before v7.7.4, bootxsa.efi fails to properly validate LUKS encryption and, …
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Critical 9.1
CPSD CryptoPro Secure Disk for Bitlocker before v7.7.4 fails to properly validate LUKS encryption and, if encryption is…
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Medium 5.3
Windows Schannel Security Feature Bypass Vulnerability
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.
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High 8.1
Picketlink-federation: picketlink saml 2.0 auth bypass via missing assertions
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 protected application.
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Critical 9.8
Picketlink-federation: auth bypass in picketlink saml unsolicited-response
A flaw was found in Picketlink Federation SAML; the unsolcited response handler would accept forged assertions with no verification or validation, permitting an unauthed attacker to authenticate as any principal in any role. This could lead to information dis…
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Medium 5.9
Multiple vulnerabilities in SAP Business AI Platform (Approuter)
SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another…
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High 8.6
Pega Platform versions 8.5.0 through 25.1.2 are affected by an improper validation of cryptographic signatures that may allow an attacker to bypass security controls.
Pega Platform versions 8.5.0 through 25.1.2 are affected by an improper validation of cryptographic signatures that may allow an attacker to bypass security controls.
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Medium 4.4
Signature validation vulnerability affecting DigiDoc applications
Improper verification of cryptographic signature and Improper Check for Unusual or Exceptional Conditions vulnerability in Estonian Information System Authority (RIA) libdigidocpp, DigiDoc4, DigiDoc on Android, and DigiDoc on iOS. This issue affects libdigido…
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Medium 6.7
systemd-homed: local privilege escalation via missing home-record signature verification on the authenticate path
systemd-homed contains a local privilege escalation bug via arbitrary system group addition to a local, logged in, homed-managed user
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High 7.1
Klever-Go: PubKeysBitmap padding bits bypass the BLS signature quorum
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, header signature verification counts the unused padding bits of the PubKeysBitmap toward the two-thirds validator quorum. These padding bits do not correspond to any valida…
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Critical 9.8
Microsoft 365 Admin Center Elevation of Privilege Vulnerability
Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.
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High 7.5
Microsoft Teams Spoofing Vulnerability
Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.
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Critical 10.0
Authentication Bypass via JWT Algorithm Mismatch in Multiple WSO2 Products Allows Account Takeover
The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported algorithm, which is then incorrectly validated, leading to unauthorized acce…
KEV Sep 24, 2026