CVE-2026-33551 | Keystone up to 26.1.0/27.0.0/28.0.0/29.0.0 EC2 Credential Creation Endpoint improper authorization

VDB-356015 · CVE-2026-33551 · GCVE-0-2026-33551 KEYSTONE UP TO 26.1.0/27.0.0/28.0.0/29.0.0 EC2 CREDENTIAL CREATION ENDPOINT IMPROPER AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 0.58+ Summaryinfo A vulnerability identified as critical has been detected in Keystone up to 26.1.0/27.0.0/28.0.0/29.0.0. Affected by this vulnerability is an unknown functionality of the component EC2 Credential Creation Endpoint. The manipulation leads to improper authorization. This vulnerability is referenced as CVE-2026-33551. Remote exploitation of the attack is possible. No exploit is available. It is recommended to apply a patch to fix this issue. Detailsinfo A vulnerability, which was classified as critical, has been found in Keystone up to 26.1.0/27.0.0/28.0.0/29.0.0. This issue affects some unknown functionality of the component EC2 Credential Creation Endpoint. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2026-33551. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK. Applying a patch is able to eliminate this problem. The bugfix is ready for download at review.opendev.org. Productinfo Name Keystone Version 26.0 26.1.0 27.0 28.0 29.0 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Improper authorization CWE: CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Patch Status: 🔍 0-Day Time: 🔒 Patch: review.opendev.org Timelineinfo 04/08/2026 Advisory disclosed 04/08/2026 +0 days VulDB entry created 04/08/2026 +0 days VulDB entry last update Sourcesinfo Advisory: seclists.org Status: Confirmed Confirmation: 🔒 CVE: CVE-2026-33551 (🔒) GCVE (CVE): GCVE-0-2026-33551 GCVE (VulDB): GCVE-100-356015 Entryinfo Created: 04/08/2026 08:04 Changes: 04/08/2026 08:04 (52) Complete: 🔍 Cache ID: 99:372:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸