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CVE-2019-11488

25
FAUCET Score

CVE-2019-11488 is an Incorrect Access Control vulnerability affecting SimplyBook.me Enterprise versions prior to 2019-04-23. This flaw allows unauthorized attackers to read and write customer or administrator data by replaying a persistent HTTP GET request hash link, such as one found in browser history. With a CVSS score of 8.1 (HIGH), this vulnerability is remotely exploitable with high impact on confidentiality, integrity, and availability, though it requires high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2019-04-23CPE matchmatch criteria
cpe:2.3:a:simplybook:simplybook:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 30th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.cybrgrade.com / CVE-2019-11488-SimplyBook.me-hash-replay-attack
ExploitThird Party Advisory
cybrgrade.com / files/Report_SimplyBookIt_MD5_Hash_Replay_by_CybrGradeUKLtd.pdf
ExploitTechnical DescriptionThird Party Advisory