IBM LoopBack (IBM API Connect 2018.1, 2018.4.1, 5.0.8.0, and 5.0.8.4) could allow an attacker to bypass authentication if the AccessToken Model is exposed over a REST API, it is then possible for anyone to create an AccessToken for any User provided they know the userId and can hence get access to the other user’s data / access to their privileges (if the user happens to be an Admin for example)
Published Dec 20, 2018
8.1
HIGHCVSS 3.0
EPSS 3.45%
Description
IBM LoopBack (IBM API Connect 2018.1, 2018.4.1, 5.0.8.0, and 5.0.8.4) could allow an attacker to bypass authentication if the AccessToken Model is exposed over a REST API, it is then possible for anyone to create an AccessToken for any User provided they know the userId and can hence get access to the other user’s data / access to their privileges (if the user happens to be an Admin for example). IBM X-Force ID: 148801.
Affected products
-
- Version 2018.1StatusaffectedConstraints-
- Version 2018.4.1StatusaffectedConstraints-
- Version 5.0.8.0StatusaffectedConstraints-
- Version 5.0.8.4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IBM | API Connect | n/a |
|
- ≥ 5.0.8.0 · ≤ 5.0.8.4
- ≥ 2018.1.0 · ≤ 2018.4.1.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.0/A:L/AC:H/AV:N/C:H/I:H/PR:N/S:U/UI:N/E:U/RC:C/RL:O
AV:N/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.45% (0.03448) | 88.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.45% (0.03448) | 87.42th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.37% (0.00370) | 56.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.31% (0.00310) | 70.87th | v3 (v2023.03.01) |
| Jun 18, 2024 | 0.37% (0.00369) | 72.68th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.35% (0.00350) | 71.02th | v3 (v2023.03.01) |
| Jan 18, 2024 | 0.35% (0.00350) | 68.93th | v3 (v2023.03.01) |
| Dec 14, 2023 | 0.36% (0.00358) | 69.06th | v3 (v2023.03.01) |
| Oct 10, 2023 | 0.42% (0.00423) | 71.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.60% (0.00599) | 75.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.22% (0.06221) | 82.08th | v1 |
| Jan 6, 2022 | 6.22% (0.06221) | 81.91th | v1 |
| Sep 1, 2021 | 6.22% (0.06221) | 89.86th | v1 |
| Apr 14, 2021 | 6.22% (0.06221) | 0.00th | v1 |
References (3)
- http://www.ibm.com/support/docview.wss?uid=ibm10733883 x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/bid/106313 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/148801 vdb-entryx_refsource_XFVDB EntryVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.ibm.com/support/docview.wss?uid=ibm10733883 | x_refsource_CONFIRMPatchVendor Advisory | |
| http://www.securityfocus.com/bid/106313 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/148801 | vdb-entryx_refsource_XFVDB EntryVendor Advisory |
Change history (0)
No recorded changes yet.