How severe is CVE-2018-1778?

CVE-2018-1778 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2018-1778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1778?

CVE-2018-1778 affects Ibm Api Connect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-1778 published?

CVE-2018-1778 was published on 2018-12-20 and last updated on 2026-06-17.

CVE-2018-1778

CVE-2018-1778 is a high-severity vulnerability in Ibm Api Connect with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 7.7)
CVSS v2: 9.3
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Ibm Api Connect
Published: 2018-12-20
Last modified: 2026-06-17

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 userÃ¢ÂÂs data / access to their privileges (if the user happens to be an Admin for example). IBM X-Force ID: 148801.

Frequently asked questions

What is CVE-2018-1778?: 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 userÃ¢ÂÂs data / access to their privileges (if the user happens to be an Admin for example). IBM X-Force ID: 148801.
How severe is CVE-2018-1778?: CVE-2018-1778 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2018-1778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1778?: CVE-2018-1778 affects Ibm Api Connect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-1778 published?: CVE-2018-1778 was published on 2018-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:api_connect:*:*:*:*:*:*:*:*

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