74 matches found
CVE-2026-72889
A flaw was found in Net::OAuth for Perl. A remote attacker can exploit this vulnerability by manipulating the signature algorithm used for verification. By specifying a weaker algorithm, such as HMAC-SHA1 or HMAC-SHA256, in the incoming message, the attacker can force the system to use a...
UBUNTU-CVE-2026-72889
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 signaturemethod parameter of the incoming message. signaturemethod is required on every request, so the algorithm used to check a signature is...
CVE-2026-63761 SurrealDB before 3.1.0 Algorithm Downgrade via ES512
SurrealDB before 3.1.0 silently substitutes the ES384 algorithm when a JWT access method is configured with ALGORITHM ES512 DEFINE ACCESS ... TYPE JWT ALGORITHM ES512, because the underlying jsonwebtoken crate v10.x has no ES512 variant and the mapping defaults to ES384 without any error, warning...
CVE-2026-63761
SurrealDB before 3.1.0 uses JWT ES512 but internally maps to ES384 because jsonwebtoken v10.x has no ES512. This causes authentication handshake failures when a P-521 key for ES512 is used and can lead to tokens being rejected by systems expecting genuine ES512 signatures. The vulnerability descr...
CVE-2026-48747 Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.13 and 8.0.13, MailomatRequestParser::validateSignature parsed X-MOM-Webhook-Signature as algo=signature and passed the request-selected algorithm to hashhmac, allowing a signature...
CVE-2026-48747: Improper Verification of Cryptographic Signature
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.13 and 8.0.13, MailomatRequestParser::validateSignature parsed X-MOM-Webhook-Signature as algo=signature and passed the request-selected algorithm to hashhmac, allowing a signature...
GHSA-FWG2-GR34-Q3W8 SurrealDB: ES512 silently downgraded to ES384 due to jsonwebtoken crate limitation
When a user configures ALGORITHM ES512 for any JWT access method DEFINE ACCESS ... TYPE JWT ALGORITHM ES512, SurrealDB silently substitutes ES384 at all four internal algorithm conversion points. This occurs because the underlying jsonwebtoken crate v10.x does not include an ES512 algorithm...
SurrealDB: ES512 silently downgraded to ES384 due to jsonwebtoken crate limitation
When a user configures ALGORITHM ES512 for any JWT access method DEFINE ACCESS ... TYPE JWT ALGORITHM ES512, SurrealDB silently substitutes ES384 at all four internal algorithm conversion points. This occurs because the underlying jsonwebtoken crate v10.x does not include an ES512 algorithm...
Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Overview CoreWCF.Primitives is a port of the service side of Windows Communication Foundation WCF to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core. Affected versions of this package are vulnerable to Selection of Less-Secure Algorithm During Negotiati...
SUSE-SU-2026:1952-1 Security update for ovmf
This update for ovmf fixes the following issues - CVE-2026-25833: mbedtls: buffer underflow in x509inetptonipv6 bsc1261476. - CVE-2026-25834: mbedtls: Algorithm downgrade vulnerability bsc1261477. - CVE-2026-25835: mbedtls: PSA random generator cloning bsc1261478. - CVE-2026-34874: mbedtls: NULL...
Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.
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Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Overview aws-encryption-sdk is an AWS Encryption SDK implementation for Python Affected versions of this package are vulnerable to Selection of Less-Secure Algorithm During Negotiation 'Algorithm Downgrade' via the shared key cache. An attacker can bypass key commitment policy enforcement by...
CVE-2026-6550: Selection of Less-Secure Algorithm During Negotiation
Cryptographic algorithm downgrade in the caching layer of Amazon AWS Encryption SDK for Python before version 3.3.1 and before version 4.0.5 might allow an authenticated local threat actor to bypass key commitment policy enforcement via a shared key cache, resulting in ciphertext that can be...
SUSE CVE-2026-25834
Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade...
Linux Distros Unpatched Vulnerability : CVE-2026-25834
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade. CVE-2026-25834 Note that Nessus relies on the presence of the package as reported by the vendo...
CVE-2026-25834
A flaw was found in Mbed TLS. A remote attacker could exploit this vulnerability by performing an algorithm downgrade attack. This could lead to a reduction in the security strength of cryptographic operations, potentially allowing for information disclosure or denial of service. Mitigation...
EUVD-2026-17967
Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade...
CVE-2026-25834
Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade...