CVE-2025-65073High· 7.5▾ TwilightOpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.2%
0.2% → 0.2%
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.
keystone < 26.0.1keystone >= 27.0.0.0rc1, < 27.0.0keystone >= 28.0.0.0rc1, < 28.0.0Upgrade to a patched release:
keystone 26.0.1keystone 27.0.0keystone 28.0.0Connected by shared product, vendor, weakness, or advisory.
CVE-2012-3542High· 7.5OpenStack Keystone Allows Remote User Account Creation
CVE-2012-4457MediumOpenStack Keystone Token authorization for a user in a disabled tenant is allowed
CVE-2026-44394Medium· 6.0OpenStack Keystone's federated token rescoping mechanism doesn't propagate the original token's expiry to the newly issued token
CVE-2026-43000Medium· 6.0OpenStack Keystone has an Incorrect Authorization issue
CVE-2012-4456HighOpenStack Keystone Improper Authentication vulnerability
CVE-2015-3646MediumOpenStack Keystone Logs Passwords