CVE-2026-39764: WordPress Radius Booking — Booking Calendar for Appointments & Services plugin <= 1.0.19 - SQL Injection vulnerability
Deferred
Published 06-10-2026Last modified 06-10-2026
Vulnerability summary
CVE-2026-39764 is a critical (CVSS 9.3) SQL Injection vulnerability in radiustheme radius booking — booking calendar for appointments & services. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 22% of scored vulnerabilities.
CVSS score
9.3/10
010
Critical · v3.1 (CVE.org)EPSS score
0.30%
0%100%
Low · Change unavailableKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 06-10-2026PublishedVulnerability first disclosed.
- 06-10-2026Last modifiedVulnerability information updated.
Description
Unauthenticated SQL Injection in Radius Booking — Booking Calendar for Appointments & Services <= 1.0.19 versions.
CVSS metrics
3 scores · 3 sources · 1 versionCritical 9.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:LSources3 sources · 7.5–9.3
- NVDNIST9.3CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
- wordfenceSource7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NDiffers
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
06-10-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Radiustheme1 product
Wordpress1 product
- radius-booking≤ 1.0.19
2 vendors · 2 products
References
2 links- patchstack.com/database/…VDB Entry