CVE-2026-35210

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Source
https://cve.org/CVERecord?id=CVE-2026-35210
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35210.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-35210
Aliases
Published
2026-07-08T21:06:02Z
Modified
2026-10-28T02:30:54Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
Summary
OpenCTI: Authorization Bypass via `synchronized-upsert` HTTP Header Injection
Details

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260326.0, an authorization bypass vulnerability in OpenCTI allows any authenticated user with KNOWLEDGE_KNUPDATE permission to bypass Confidence Level validation and Object Marking restrictions by injecting the synchronized-upsert: true HTTP header, enabling attackers to downgrade confidence levels, remove security markings such as TLP:RED, manipulate relationships, and affect STIX object types including Indicators, ThreatActors, Malware, and Reports. This issue is fixed in version 7.260326.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-639",
        "CWE-863"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35210.json"
}
References

Affected packages

Git / github.com/opencti-platform/opencti

Affected ranges

Type
GIT
Repo
https://github.com/opencti-platform/opencti
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f4930dd85df7e8de4a3edd8d8281ab4b856882d4
Fixed
134531ddf5ecf741006b7f0870b7c36711b96540
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:citeum:opencti:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "7.260326.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "134531ddf5ecf741006b7f0870b7c36711b96540"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "7.260326.0",
            "range":  [
                {
                    "fixed":  "f4930dd85df7e8de4a3edd8d8281ab4b856882d4"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

1.*
1.0.0
1.0.1
1.0.2
1.1.0
1.1.2
2.*
2.0.1
2.0.2
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.2.0
3.2.2
3.3.0
3.3.1
3.3.2
4.*
4.0.0
4.0.1
4.0.2
4.0.3
4.0.4
4.0.5
4.0.6
4.0.7
4.1.0
4.1.1
4.1.2
4.2.0
4.2.1
4.2.2
4.2.3
4.2.4
4.3.0
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
5.*
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.1.1
5.1.2
5.1.3
5.1.4
5.10.0
5.10.1
5.10.2
5.10.3
5.11.0
5.11.1
5.11.10
5.11.11
5.11.12
5.11.13
5.11.2
5.11.3
5.11.4
5.11.5
5.11.6
5.11.7
5.11.8
5.11.9
5.12.0
5.12.1
5.12.10
5.12.11
5.12.12
5.12.13
5.12.14
5.12.15
5.12.16
5.12.17
5.12.18
5.12.19
5.12.2
5.12.20
5.12.21
5.12.22
5.12.23
5.12.24
5.12.25
5.12.26
5.12.27
5.12.3
5.12.4
5.12.5
5.12.6
5.12.7
5.12.8
5.12.9
5.2.0
5.2.1
5.2.2
5.2.3
5.2.4
5.3.0
5.3.1
5.3.10
5.3.11
5.3.12
5.3.13
5.3.14
5.3.15
5.3.16
5.3.17
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
5.4.0
5.4.1
5.5.0
5.5.1
5.5.2
5.5.3
5.5.4
5.6.0
5.6.1
5.6.2
5.7.0
5.7.1
5.7.2
5.7.3
5.7.4
5.7.5
5.7.6
5.8.0
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
5.8.6
5.8.7
5.9.0
5.9.1
5.9.2
5.9.3
5.9.4
5.9.5
5.9.6
6.*
6.0.0
6.0.10
6.0.2
6.0.3
6.0.4
6.0.5
6.0.6
6.0.7
6.0.8
6.0.9
6.1.0
6.1.1
6.1.10
6.1.12
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.2.0
6.2.1
6.2.10
6.2.11
6.2.12
6.2.13
6.2.14
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
6.3.0
6.3.1
6.3.3
6.3.4
6.3.5
6.3.6
6.4.0
6.4.1
6.4.10
6.4.11
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.7
6.4.8
6.4.9
6.5.1
6.5.10
6.5.11
6.5.2
6.5.3
6.5.4
6.5.5
6.5.6
6.5.7
6.5.8
6.5.9
6.6.0
6.6.1
6.7.0
6.7.1
6.7.10
6.7.11
6.7.12
6.7.13
6.7.14
6.7.15
6.7.16
6.7.17
6.7.18
6.7.19
6.7.2
6.7.20
6.7.3
6.7.4
6.7.5
6.7.6
6.7.7
6.7.8
6.7.9
6.8.0
6.8.1
6.8.10
6.8.11
6.8.12
6.8.13
6.8.14
6.8.15
6.8.16
6.8.17
6.8.2
6.8.3
6.8.4
6.8.5
6.8.6
6.8.7
6.8.8
6.8.9
6.9.0
7.*
7.260224.0
7.260227.0
7.260305.0
7.260306.0
7.260306.1
7.260309.0
7.260317.0
7.260318.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35210.json"