CVE-2026-61428

PraisonAI AgentMail is affected by CVE-2026-61428 in versions before 4.6.78, where webhook messages lack signature verification. This enables unauthenticated attackers to POST crafted message.received events to the webhook endpoint, injecting arbitrary content into the agent and triggering replie...

CVE-2026-61428

PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and...

GHSA-MV28-WJ57-F57G YesWiki Vulnerable to Unauthenticated ActivityPub Signature-Verification Bypass via `!openssl_verify(...)` accepting `int(-1)`

Summary HttpSignatureService::verifySignature checks the result of PHP's opensslverify with a loose boolean negation - if !opensslverify... throw ... . PHP's opensslverify has four possible return values: | return | meaning | !return | | ------ | ------------------------------------------------ |...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the verifySignature process due to improper verification of cryptographic signatures when handling the return value of opensslverify. An attacker can gain unauthorized access and perfo...

Security Bulletin: Due to use of Golang Go, multiple vulnerabilities affect IBM Cloud Pak System

Summary Due to use of Golang Go multiple vulnerabilities affect IBM Cloud Pak System. IBM Cloud Pak System has addressed these vulnerabilities. Vulnerability Details CVEID:CVE-2026-39827 DESCRIPTION: An authenticated SSH client that repeatedly opened channels which were rejected by the server...

CVE-2026-9027

The CorvusPay WooCommerce Payment Gateway plugin for WordPress is vulnerable to Payment Bypass via Improper Verification of Cryptographic Signature in all versions up to, and including, 2.7.4. The corvuspaysuccesshandler function registers the REST endpoint POST /wp-json/corvuspay/success/ with...

EUVD-2026-42560

The CorvusPay WooCommerce Payment Gateway plugin for WordPress is vulnerable to Payment Bypass via Improper Verification of Cryptographic Signature in all versions up to, and including, 2.7.4. The corvuspaysuccesshandler function registers the REST endpoint POST /wp-json/corvuspay/success/ with...

CVE-2026-9027

Summary of the CVE-2026-9027 issue : The CorvusPay WooCommerce Gateway for WordPress (versions up to 2.7.4) is vulnerable to a payment bypass via improper verification of the cryptographic signature. The REST endpoint POST /wp-json/corvuspay/success/ is registered with a permissive permission cal...

golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters

A flaw was found in golang.org/x/crypto/ssh. The RSA and DSA public key parsers in the affected component did not enforce size limits on key parameters. This vulnerability allows an unauthenticated client to provide a crafted public key with an excessively large modulus or DSA parameter during...

CVE-2026-54773

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF WS-Security signature verification performs a document-wide ds:Signature lookup, allowing an unauthenticated remote attacker to place a SOAP header before wsse:Security an...

CVE-2026-54774

CoreWCF (CoreWCF.Primitives and related components) is affected by CVE-2026-54774 where SamlSerializer may skip final SignatureValue verification when validating SAML tokens signed with a non-X.509 issuer token. The vulnerability arises when an out-of-band token resolver provides a non-X.509 Secu...

CVE-2026-54783 CoreWCF: XML Signature Wrapping in WS-Security endorsing/supporting signature verification allows replay of captured signed messages

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF WS-Security endorsing and supporting signature verification does not ensure the selected ds:Signature covers the expected Security header target, allowing an attacker with...

CVE-2026-54783

CoreWCF (Net Core port of WCF) has an XML Signature Wrapping vulnerability in WS-Security endorsing/signature verification prior to v1.8.1 and v1.9.1, where the ds:Signature may not cover the expected Security header target. An attacker who captures a signed SOAP envelope can replay arbitrary ser...

CVE-2026-56360

n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary malicious data...

CVE-2026-56360 n8n - Webhook Forgery via Unsigned POST Requests in ZendeskTrigger

n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary malicious data...

CVE-2026-56360

n8n is affected in versions prior to 1.123.18 and 2.6.2 where the ZendeskTrigger node fails to verify HMAC-SHA256 signatures on Zendesk webhooks. This allows attackers who know the webhook URL to send unsigned POST requests, potentially triggering workflows with arbitrary data. No remediation det...

CVE-2026-56360 n8n - Webhook Forgery via Unsigned POST Requests in ZendeskTrigger

n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary malicious data...

CVE-2026-57246

When dealing with abnormally constructed objects, there is a lack of argument validation; JavaScript triggers signature verification, but the signature plugin does not perform validation when copying the abnormal string, causing the application to crash...

PYSEC-2026-1200 Authlib: JWS/JWT accepts unknown crit headers (RFC violation → possible authz bypass)

Summary Authlib’s JWS verification accepts tokens that declare unknown critical header parameters crit, violating RFC 7515 “must‑understand” semantics. An attacker can craft a signed token with a critical header for example, bork or cnf that strict verifiers reject but Authlib accepts. In...

PYSEC-2026-1921 SignXML's signature verification with HMAC is vulnerable to an algorithm confusion attack

When verifying signatures with X509 certificate validation turned off and HMAC shared secret set signxml.XMLVerifier.verifyrequirex509=False, hmackey=..., prior versions of SignXML are vulnerable to a potential algorithm confusion attack. Unless the user explicitly limits the expected signature...