Auth bypass in Simplybook
CVE-2019-11488
Incorrect Access Control in the Account Access / Password Reset Link in SimplyBook.me Enterprise before 2019-04-23 allows Unauthorized Attackers to READ/WRITE Customer or Administrator data via a persistent HTTP GET Request Hash Link Replay, as demonstrated by a login-link from the browser history.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (74.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
References
- cybrgrade.com/files/Report_SimplyBookIt_MD5_Hash_Replay_by_CybrGradeUKLtd.pdf (Technical Description, Exploit, Third Party Advisory)
- blog.cybrgrade.com/CVE-2019-11488-SimplyBook.me-hash-replay-attack/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11488?
- CVE-2019-11488 is a high-severity vulnerability in Simplybook, classified under Improper Authentication. CVSS score: 8.1/10. Published 2019-04-25.
- How severe is CVE-2019-11488?
- High severity. CVSS v3 base score is 8.1 out of 10.