CVE-2020-27379: Cross Site Request Forgery (CSRF) vulnerability in Booking Core - Ultimate Booking System Booking Core 1.7.0

Routine

MEDIUM 6.5DOWNGRADE

CVE-2020-27379 is a medium-severity flaw (CVSS 6.5) affecting booking core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Request Forgery (CSRF) vulnerability in Booking Core - Ultimate Booking System Booking Core 1.7.0 . The CSRF token is not being validated when the request is sent as a GET method. This results in an unauthorized change in the user's email ID, which can later be used to reset the password. The new password will be sent to a modified email ID.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-352
Published	2021-07-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bookingcore

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-14 15:15 UTCPublished CVE record published
2026-06-17 03:09 UTCUpdated Record last modified

bookingcore booking core DOWNGRADE

Affected: 1.7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7.0

1. Check installed version

apt-cache policy booking-core || rpm -q booking-core || booking-core --version

2. No fixed release: DOWNGRADE to a release before 1.7.0 (Debian / Ubuntu)

apt-cache madison booking-core sudo apt install booking-core=<VERSION_BEFORE_1.7.0> sudo apt-mark hold booking-core

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list booking-core sudo dnf downgrade booking-core-<VERSION_BEFORE_1.7.0> sudo dnf versionlock add booking-core

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-27379?

booking core: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-27379 being exploited?

CVE-2020-27379 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-27379 affect?

CVE-2020-27379 affects booking core. Severity is medium (CVSS 6.5). Cross Site Request Forgery (CSRF) vulnerability in Booking Core - Ultimate Booking System Booking Core 1.7.0 . The CSRF token is not being validated when the request is sent as a GET method. This results in an unauthorized change in the use

How urgent is CVE-2020-27379?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2021-37333 CRITICAL 9.8 DOWNGRADE Laravel Booking System Booking Core 2.0 is vulnerable to Session Management
CVE-2021-37331 MEDIUM 5.3 DOWNGRADE Laravel Booking System Booking Core 2.0 is vulnerable to Incorrect Access Control
CVE-2021-37330 MEDIUM 5.4 DOWNGRADE Laravel Booking System Booking Core 2.0 is vulnerable to Cross Site Scripting (XSS)
CVE-2020-25445 HIGH 7.8 DOWNGRADE The “Subscribe” feature in Ultimate Booking System Booking Core 1.7.0 is vulnerable to CSV formula injection
CVE-2020-25444 MEDIUM 5.4 DOWNGRADE Cross Site Scripting (XSS) vulnerability in Booking Core - Ultimate Booking System Booking Core 1.7.0 via the

References

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