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...

UBUNTU-CVE-2026-15041

A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password verification function uses standard memcmp for comparing password hashes instead of a constant-time comparison function. A remote attacker could potentially use timing measurements of LDAP bind attempts to infer partial hash...

PYSEC-2026-1716 OctoPrint has Timing Side-Channel Vulnerability in API Key Authentication

Impact OctoPrint versions up to and including 1.11.5 are affected by a theoretical timing attack vulnerability that allows API key extraction over the network. Due to using character based comparison that short-circuits on the first mismatched character during API key validation, rather than a...

PYSEC-2026-1066 wolfCrypt leaks cryptographic information via timing side channel

wolfSSL and wolfCrypt 4.0.0 and earlier when configured without --enable-fpecc, --enable-sp, or --enable-sp-math contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about th...

GHSA-G5VH-55HW-RXM8 GoFiber Vulnerable to Username Enumeration via Timing Oracle in BasicAuth Default Authorizer

Summary The default Authorizer function in GoFiber's BasicAuth middleware uses short-circuit evaluation that skips password hash comparison for non-existent usernames. With bcrypt-hashed passwords the primary use case, the timing difference between a valid and invalid username is approximately...

CVE-2026-13758

CryptX versions before 0.088001 for Perl compare AEAD authentication tags in non-constant time in the streaming decryptdone path. The decryptdone$tag form compares it against the computed tag with memNE memcmp != 0, which short-circuits on the first differing byte, so its run time depends on the...

CVE-2026-13758 CryptX versions before 0.088_001 for Perl compare AEAD authentication tags in non-constant time in the streaming decrypt_done path

CryptX versions before 0.088001 for Perl compare AEAD authentication tags in non-constant time in the streaming decryptdone path. The decryptdone$tag form compares it against the computed tag with memNE memcmp != 0, which short-circuits on the first differing byte, so its run time depends on the...

gnutls: gnutls: Information disclosure via timing side-channel in PKCS#7 padding removal

A flaw was found in gnutls. The PKCS7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of...

RHEL 9 : gnutls (RHSA-2026:32962)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:32962 advisory. The gnutls packages provide the GNU Transport Layer Security GnuTLS library, which implements cryptographic algorithms and protocols such a...

GO-2026-5696 Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel in github.com/enchant97/note-mark/backend

Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel in github.com/enchant97/note-mark/backend. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports...

GO-2026-5195 Traefik: A timing side-channel vulnerability allows for valid username enumeration via BasicAuth middleware in github.com/traefik/traefik

Traefik: A timing side-channel vulnerability allows for valid username enumeration via BasicAuth middleware in github.com/traefik/traefik...

gnutls: gnutls: Information disclosure via timing side-channel in PKCS#7 padding removal

A flaw was found in gnutls. The PKCS7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of...

postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison

A flaw was found in PostgreSQL. This vulnerability, a covert timing channel, exists in the comparison of MD5-hashed passwords during authentication. A remote attacker could exploit this to recover user credentials, gaining unauthorized access to the database. This issue specifically impacts...

Oracle Linux 9 : memcached (ELSA-2026-27862)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-27862 advisory. - Fix timing side-channel in SASL password database authentication CVE-2026-47783 Tenable has extracted the preceding description block directly from the Oracl...

RLSA-2026:27842 Important: memcached security update

memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Security Fixes: memcached: memcached: Username enumeration via timing side channel CVE-2026-47783 For more detai...

memcached security update

An update is available for memcached. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list memcached is a high-performance, distributed memory object caching system,...

RLSA-2026:27862 Important: memcached security update

memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Security Fixes: memcached: memcached: Username enumeration via timing side channel CVE-2026-47783 For more detai...

RockyLinux 9 : memcached (RLSA-2026:27862)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:27862 advisory. memcached: memcached: Username enumeration via timing side channel CVE-2026-47783 Tenable has extracted the preceding description block directly from the...

AlmaLinux 9 : memcached (ALSA-2026:27862)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:27862 advisory. memcached: memcached: Username enumeration via timing side channel CVE-2026-47783 Tenable has extracted the preceding description block directly from the AlmaLinu...

RockyLinux 10 : memcached (RLSA-2026:27842)

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:27842 advisory. memcached: memcached: Username enumeration via timing side channel CVE-2026-47783 Tenable has extracted the preceding description block directly from the...