How severe is CVE-2019-11489?

CVE-2019-11489 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-11489 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11489?

CVE-2019-11489 affects Simplybook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11489?

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-2019-11489 published?

CVE-2019-11489 was published on 2019-04-25 and last updated on 2026-06-17.

CVE-2019-11489

CVE-2019-11489 is a high-severity vulnerability in Simplybook with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Simplybook
Published: 2019-04-25
Last modified: 2026-06-17

Description

Incorrect Access Control in the Administrative Management Interface in SimplyBook.me Enterprise before 2019-04-23 allows Authenticated Low-Priv Users to Elevate Privileges to Full Admin Rights via a crafted HTTP PUT Request, as demonstrated by modified JSON data to a /v2/rest/ URI.

Frequently asked questions

What is CVE-2019-11489?: Incorrect Access Control in the Administrative Management Interface in SimplyBook.me Enterprise before 2019-04-23 allows Authenticated Low-Priv Users to Elevate Privileges to Full Admin Rights via a crafted HTTP PUT Request, as demonstrated by modified JSON data to a /v2/rest/ URI.
How severe is CVE-2019-11489?: CVE-2019-11489 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-11489 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11489?: CVE-2019-11489 affects Simplybook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11489?: 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-2019-11489 published?: CVE-2019-11489 was published on 2019-04-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:simplybook:simplybook:*:*:*:*:enterprise:*:*:*

More vulnerabilities in Simplybook

CVE-2019-11887 — Critical (CVSS 9.8): SimplyBook.me through 2019-05-11 does not properly restrict File Upload which could allow remote code execution.
CVE-2019-11488 — High (CVSS 8.1): Incorrect Access Control in the Account Access / Password Reset Link in SimplyBook.me Enterprise before 2019-04-23…

All CVEs affecting Simplybook →