Time Slots Booking Calendar 4.0 is vulnerable to Multiple HTML Injection issues via the name, plugin_sms_api_key, plugin_sms_country_code, c
Time Slots Booking Calendar 4.0 is vulnerable to Multiple HTML Injection issues via the name, plugin_sms_api_key, plugin_sms_country_code, calendar_id, title, country name, or customer_name parameter.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Dec 7, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.5% · 38th percentile
- CWE
- CWE-79
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.4 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| phpjabbers | time slots booking calendar | cpe:2.3:a:phpjabbers:time_slots_booking_calendar |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- phpjabbers time slots booking calendar4.0
Same product
phpjabbers: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-33562User enumeration is found in in PHP Jabbers Time Slots Booking Calendar v3.3.39Monitor
- CVE-2023-33561Improper input validation of password parameter in PHP Jabbers Time Slots Booking Calendar v 3.3 results in insecure passwords.39Monitor
- CVE-2023-48826Time Slots Booking Calendar 4.0 is vulnerable to CSV Injection via the unique ID field of the Reservations List.35Monitor
- CVE-2023-33563In PHP Jabbers Time Slots Booking Calendar 3.3 , lack of verification when changing an email address and/or password (on the Profile Page) a35Monitor
- CVE-2023-48833A lack of rate limiting in pjActionAJaxSend in Time Slots Booking Calendar 4.0 allows attackers to cause resource exhaustion.30Monitor
- CVE-2023-33564There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Time Slots Booking Calendar v3.3.24Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-33560128 days apartThere is a Cross Site Scripting (XSS) vulnerability in "cid" parameter of preview.php in PHPJabbers Time Slots Booking Calendar v3.3.24Monitor
- CVE-2023-33564128 days apartThere is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Time Slots Booking Calendar v3.3.24Monitor
- CVE-2023-488280 days apartTime Slots Booking Calendar 4.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) issues via the name, plugin_sms_api_key, plugin_21Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
nvd-primary
Root cause
User content is inserted into the page as HTML. The browser interprets the content as code rather than data.
The bug in code
The whole CWE-79 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
commentEl.innerHTML = comment.body;Fixed
commentEl.textContent = comment.body;Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.