CVE-2026-79787

Alluxio's S3 REST proxy fails to verify AWS Signature Version 4 signatures in its default configuration, allowing unauthenticated attackers to spoof user identity. Attackers can extract usernames from unsigned Authorization headers and impersonate any user, including service accounts, to read,...

CVE-2026-79787: Improper Authentication

Alluxio's S3 REST proxy fails to verify AWS Signature Version 4 signatures in its default configuration, allowing unauthenticated attackers to spoof user identity. Attackers can extract usernames from unsigned Authorization headers and impersonate any user, including service accounts, to read,...

openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature validation flaw

A flaw was found in OpenStack Keystone. This vulnerability allows an attacker to obtain a valid OpenStack's Keystone token, leading to access to unauthorized resources or privilege escalation within the OpenStack instance via sending a valid AWS Amazon Web Services signature to the /v3/ec2tokens ...

CVE-2025-65073

OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization...

CVE-2025-65073: Incorrect Authorization

OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization...

EUVD-2020-0098

Malware in sbrugna...

GHSA-RQW2-HHRF-7936 OpenStack Keystone does not check signature TTL of the EC2 credential auth method

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times...

Man-in-the-Middle (MitM)

openstack keystone is vulnerable to man-in-the-middle attack. Lack of signature TTL check to verify the timestamp in the AWS Signature V4 token signature allows an attacker to sniff an Authorization header in a man-in-the-middle attack and reuse the header to reissue openstack tokens...

CVE-2020-12692

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times...

CVE-2020-12692

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times...

PT-2020-13209

Name of the Vulnerable Software and Affected Versions OpenStack Keystone versions prior to 15.0.1 OpenStack Keystone version 16.0.0 Description An issue was discovered in the EC2 API of OpenStack Keystone, where it lacks a signature TTL check for AWS Signature V4. This allows an attacker to sniff...

CVE-2020-12692: Authentication Bypass by Capture-replay

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times...