CVE-2026-21887
CVE-2026-21887 · OpenCTI has a Semi-Blind SSRF via Unvalidated External URL in Data Ingestion Feature
This page contains facts from public vulnerability sources. Check the original advisory before updating.
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.8.16, the OpenCTI platform’s data ingestion feature accepts user-supplied URLs without validation and uses the Axios HTTP client with its default configuration (allowAbsoluteUrls: true). This allows attackers to craft requests to arbitrary endpoints, including internal services, because Axios will accept and process absolute URLs. This results in a semi-blind SSRF, as responses may not be fully visible but can still impact internal systems. This vulnerability is fixed in 6.8.16.
CVSS 7.7 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: python
Affected products and versions
opencti
- Versions
- < 6.8.16: Affected
No fix published
pycti PyPI
- Versions
- 1.2.1
- 1.2.11
- 1.2.12
- 1.2.13
- 1.2.14
- 1.2.15
- 1.2.2
- 1.2.4
- 1.2.9
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.1.10
- 2.1.11
- 2.1.12
- 2.1.13
- 2.1.3
- 2.1.4
- 2.1.5
- 2.1.6
- 2.1.7
- 2.1.8
- 2.1.9
- 3.0.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.1.0
- 3.1.1
- 3.1.2
- 3.2.0
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.2.5
- 3.2.6
- 3.2.7
- 3.3.0
- 3.3.1
- 3.3.2
- 3.3.3
- 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
- 4.2.1
- 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
- 4.4.2
- 4.4.3
- 4.5.0
- 4.5.1
- 4.5.2
- 4.5.3
- 4.5.4
- 4.5.5
- 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
- 5.11.14
- 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
- 5.12.28
- 5.12.29
- 5.12.3
- 5.12.30
- 5.12.31
- 5.12.32
- 5.12.33
- 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
- 5.3.post5310
- 5.3.post5311
- 5.3.post5312
- 5.3.post5314
- 5.3.post5315
- 5.3.post5316
- 5.3.post5317
- 5.3.post5318
- 5.4.0
- 5.4.1
- 5.5.0
- 5.5.1
- 5.5.2
- 5.5.3
- 5.5.4
- 5.5.5
- 5.5.6
- 5.5.post551
- 5.5.post552
- 5.5.post553
- 5.5.post554
- 5.5.post555
- 5.5.post556
- 5.6.0
- 5.6.1
- 5.6.2
- 5.6.post560
- 5.6.post561
- 5.6.post562
- 5.7.0
- 5.7.1
- 5.7.2
- 5.7.3
- 5.7.4
- 5.7.5
- 5.7.6
- 5.7.post570
- 5.7.post571
- 5.7.post572
- 5.7.post573
- 5.7.post574
- 5.7.post575
- 5.7.post576
- 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
- 6.0.0
- 6.0.1
- 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
- 6.1.11
- 6.1.12
- 6.1.13
- 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
- 6.2.15
- 6.2.16
- 6.2.17
- 6.2.18
- 6.2.19
- 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
- 6.3.10
- 6.3.11
- 6.3.12
- 6.3.13
- 6.3.14
- 6.3.2
- 6.3.3
- 6.3.4
- 6.3.5
- 6.3.6
- 6.3.7
- 6.3.8
- 6.3.9
- 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
- 6.5.0
- 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
- 6.6.10
- 6.6.11
- 6.6.12
- 6.6.13
- 6.6.14
- 6.6.15
- 6.6.16
- 6.6.17
- 6.6.18
- 6.6.2
- 6.6.3
- 6.6.4
- 6.6.5
- 6.6.6
- 6.6.7
- 6.6.8
- 6.6.9
- 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
- 6.8.2
- 6.8.3
- 6.8.4
- 6.8.5
- 6.8.6
- 6.8.7
- 6.8.8
- 6.8.9
- Affected ranges
- ECOSYSTEM: < 6.8.16
Update to 6.8.16