CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

DEBIAN-CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

UBUNTU-CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-4942 IBM i is Affected by Algorithm Downgrade in Transport Layer Security []

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security TLS protocol to a version disabled in the server configuration...

CVE-2026-4942 IBM i is Affected by Algorithm Downgrade in Transport Layer Security []

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security TLS protocol to a version disabled in the server configuration...

Metasploit Wrap Up: An HTTP to SMB relay plus Payload Improvements

Metasploit Wrap Up Housekeeping While the Metasploit Framework will be continuing its weekly release cadence, bringing you dear reader our latest content, the Weekly Wrap Up is being shifted to a bi-weekly cadence. The team is planning to use the additional time between posts to record demos of...

CVE-2026-53712

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...

CVE-2026-49852 joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852 joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852 joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852

Summary: CVE-2026-49852 affects the Python library joserfc. Prior to version 1.6.8, joserfc.jwt.decode can accept attacker-forged HS256/HS384/HS512 tokens if the verification key is empty or None, enabling potential authentication bypass when the configured secret resolves to an empty string. The...

EUVD-2026-45281

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

GHSA-2V2F-MVFG-PH56 meta-ads-mcp: X-Pipeboard-Token Header Auth Bypass Reuses Operator Meta Token

X-Pipeboard-Token Header Auth Bypass Reuses Operator Meta Token Summary AuthInjectionMiddleware in meta-ads-mcp rejects HTTP MCP requests only when both authtoken and pipeboardtoken are absent. Because extracttokenfromheaders does not recognise the X-Pipeboard-Token header, an attacker who sends...

meta-ads-mcp: X-Pipeboard-Token Header Auth Bypass Reuses Operator Meta Token

X-Pipeboard-Token Header Auth Bypass Reuses Operator Meta Token Summary AuthInjectionMiddleware in meta-ads-mcp rejects HTTP MCP requests only when both authtoken and pipeboardtoken are absent. Because extracttokenfromheaders does not recognise the X-Pipeboard-Token header, an attacker who sends...

meta-ads-mcp: Server-Side Request Forgery (SSRF) in `upload_ad_image` via Unrestricted `image_url` Fetch

Server-Side Request Forgery SSRF in uploadadimage via Unrestricted imageurl Fetch Summary The uploadadimage MCP tool in meta-ads-mcp v1.0.113 passes an attacker-controlled imageurl parameter directly to an HTTP fetch helper httpx.AsyncClientfollowredirects=True.geturl without any scheme, host, or...

GHSA-45GF-FJXP-CJPQ meta-ads-mcp: Server-Side Request Forgery (SSRF) in `upload_ad_image` via Unrestricted `image_url` Fetch

Server-Side Request Forgery SSRF in uploadadimage via Unrestricted imageurl Fetch Summary The uploadadimage MCP tool in meta-ads-mcp v1.0.113 passes an attacker-controlled imageurl parameter directly to an HTTP fetch helper httpx.AsyncClientfollowredirects=True.geturl without any scheme, host, or...

CVE-2026-53712 SCRAM: Silent channel-binding authentication downgrade via unsupported certificate algorithms

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...