TI-2026-83285 Aliases CVE-2026-39786 GHSA-hjrr-vx36-hcfp

Cross-site scripting in WordPress BA Book Everything plugin

LOW 31CWE-79Published 2026-10-30 · Updated 2026-10-30

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The WordPress BA Book Everything plugin by bookingalgorithms, versions up to and including 1.8.33, does not neutralize user input during web page generation, which is a cross-site scripting flaw (CWE-79). An unauthenticated remote attacker can inject script that runs in a victim's browser, but the attack requires a user to interact with a crafted page. The impact is partial loss of confidentiality and integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Description from the CNA

Unauthenticated Cross Site Scripting (XSS) in BA Book Everything <= 1.8.33 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00228 13th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
bookingalgorithms	BA Book Everything	up to 1.8.33	—	No fix listed	CNA

BA Book Everything Vendorbookingalgorithms Affected up to 1.8.33 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:ba-booking:ba_book_everything::::::::	—	—	bookingalgorithms

cpe:2.3:a:ba-booking:ba_book_everything:*:*:*:*:*:*:*:* Versions — — ·bookingalgorithms

Remediation

The sources list no fixed version for BA Book Everything.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Timeline

2026-10-30 Threatist record created from CVE-2026-39786
2026-10-30 CISA SSVC decision points changed
2026-10-30 Priority changed: MEDIUM → LOW
2026-10-30 Alias added: GHSA-hjrr-vx36-hcfp

References

Other 1

https://patchstack.com/database/wordpress/plugin/ba-book-everything/vulnerability/wordpress-ba-book-everything-plugin-1-8-33-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2024-08161 BA Book Everything <= 1.6.20 - Cross-Site Request Forgery to Email Address Update/Account Takeover CVSS 3.1HIGH 8.8
TI-2024-21200 WordPress BA Book Everything plugin <= 1.6.4 - Auth. SQL Injection vulnerability CVSS 3.1HIGH 8.8
TI-2026-63730 BA Book Everything <= 1.8.27 - Unauthenticated Stored Cross-Site Scripting via first_name Parameter CVSS 3.1HIGH 7.2
TI-2026-66007 BA Book Everything <= 1.8.28 - Unauthenticated Stored Cross-Site Scripting via 'booking_service_qty' Parameter CVSS 3.1HIGH 7.2
TI-2024-31678 WordPress BA Book Everything plugin <= 1.6.20 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
TI-2024-08160 BA Book Everything <= 1.6.20 - Unauthenticated Arbitrary User Password Reset CVSS 3.1MEDIUM 5.3

See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences