CVE-2026-53501

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 substring, an attacker can insert...

EUVD-2026-51608

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 substring, an attacker can insert...

CVE-2026-54736 Phalcon: Non-constant-time HMAC verification in `Encryption\Crypt::decrypt` (timing side-channel)

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 on the first...

CVE-2026-54736 Phalcon: Non-constant-time HMAC verification in `Encryption\Crypt::decrypt` (timing side-channel)

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 on the first...

PYSEC-2026-732 Plone credentials stored in session cookie

Plone CMS 3.1.x uses invariant data a client username and a server secret when calculating an HMAC-SHA1 value for an authentication cookie, which makes it easier for remote attackers to gain permanent access to an account by sniffing the network...

CVE-2026-6331

HMAC zero-length tag forgery in EVPDigestVerifyFinal, where a zero-length tag could be accepted as valid during HMAC verification. In the OpenSSL-compatibility HMAC verify path the supplied signature length was only checked as not exceeding the MAC length, so a zero-length or otherwise truncated...

CVE-2026-6331

CVE-2026-6331 describes an HMAC zero-length tag forgery in EVP_DigestVerifyFinal. The OpenSSL-compatibility HMAC verify path allowed a zero-length or truncated tag to pass because the signature length check only ensured it did not exceed the MAC length. The fixed behavior now requires the supplie...

PT-2026-52530

Bleichenbacher padding oracle in PKCS7 KTRI decryption. When decrypting PKCS7 EnvelopedData using RSA PKCS1 v1.5 key transport, wolfSSL returned distinguishable error codes depending on whether RSA padding validation failed versus whether the decrypted content was malformed. An attacker able to...

symfony/ux-live-component: LiveComponentHydrator HMAC checksum lacks component and slot binding

Description In symfony/ux-live-component, a component's server-side state is exposed to the browser as a set of props LiveProp-annotated properties. Props marked writable: true can be freely changed by the client. Read-only props are round-tripped to the browser and back, and their integrity is...

GHSA-RRJ9-5Q2J-4GVR Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade

Description Symfony\Component\Mailer\Bridge\Mailomat\Webhook\MailomatRequestParser::validateSignature parses the X-MOM-Webhook-Signature request header as algo=signature and passes the wire-supplied $algo directly to hashhmac when verifying the request against the configured webhook secret. The...

USN-8414-1 openssl vulnerabilities

Frank Buss discovered that OpenSSL had a heap buffer over-read in ASN.1 content parsing. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service, or obtain sensitive information. CVE-2026-34180 Pavol Zacik and Alex Gaynor discovered that OpenSSL...

CVE-2026-45039

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, the internode RPC layer authenticates every request with an HMAC-SHA256 signature using a shared secret. The function that produces this secret, getsharedsecret in crates/ecstore/src/rpc/httpauth.rs, falls back to...

CVE-2026-39969 TypeBot: WhatsApp Webhook Endpoint Missing Signature Verification

TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint POST /v1/workspaces/workspaceId/whatsapp/credentialsId/webhook does not verify the x-hub-signature-256 HMAC signature included by Meta in every webhook delivery. The webhook URL exposes both...

EUVD-2026-31485

TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint POST /v1/workspaces/workspaceId/whatsapp/credentialsId/webhook does not verify the x-hub-signature-256 HMAC signature included by Meta in every webhook delivery. The webhook URL exposes both...

Fission StorageSvc /v1/archive endpoint exposes unauthenticated CRUD over all function archives

Summary The Fission storagesvc component registers archive CRUD handlers /v1/archive GET / POST / DELETE and /v1/archives list directly on its HTTP router without performing any authentication or authorization. Any caller able to reach the storagesvc ClusterIP — including any other workload in th...

Exploit for Incorrect Resource Transfer Between Spheres in Linux Linux_Kernel

copy-fail CVE-2026-31431 Copy Fail – a C language PoC,...

PT-2026-42684

Name of the Vulnerable Software and Affected Versions Fission versions prior to 1.23.0 Description The storagesvc component registers archive CRUD handlers on its HTTP router without authentication or authorization. This allows any caller capable of reaching the storagesvc ClusterIP, such as othe...

CVE-2026-45223 Crabbox < 0.9.0 Authentication Bypass via Admin Claim Injection

Crabbox before 0.9.0 contains an authentication bypass vulnerability in the coordinator user-token verification path where the verifyUserToken function fails to reject payloads containing an admin claim, allowing attackers to escalate privileges. An attacker with access to the shared non-admin...

net-imap vulnerable to denial of service via high iteration count for `SCRAM-*` authentication

Summary When authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. Details A hostile IMAP server can send an arbitrarily large PBKDF2 iteration count in the...

CVE-2026-41244 Mojic: Observable Timing Discrepancy in HMAC Verification

Mojic is a CLI tool to transform readable C code into an unrecognizable chaotic stream of emojis. Prior to 2.1.4, the CipherEngine uses a standard equality operator !== to verify the HMAC-SHA256 integrity seal during the decryption phase. This creates an Observable Timing Discrepancy CWE-208,...