Skip to main content
Public proof of conceptFix available

CVE-2021-37833

A public proof of concept exists; no exploitation attested.

  • Published2021-08-03
  • WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A reflected cross-site scripting (XSS) vulnerability exists in multiple pages in version 3.0.2 of the Hotel Druid application that allows for arbitrary execution of JavaScript commands.

Timeline

dates in UTC
  1. 2021-08-0313:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-37833?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-37833?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Digitaldruid hoteldruid
BranchAffectedFixed in
3.0= 3.0.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • hoteldruidUbuntu:25.10all versions · no fixed version listed
  • hoteldruidUbuntu:24.04:LTSall versions · no fixed version listed
  • hoteldruidUbuntu:22.04:LTSall versions · no fixed version listed
  • hoteldruidUbuntu:20.04:LTSall versions · no fixed version listed
  • hoteldruidUbuntu:18.04:LTSall versions · no fixed version listed
  • hoteldruidUbuntu:16.04:LTSall versions · no fixed version listed
  • hoteldruidDebian:12all versions · fixed in 3.0.3-1

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifieddievus/CVE-2021-37833
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published
2021-08-03
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-37833?

A reflected cross-site scripting (XSS) vulnerability exists in multiple pages in version 3.0.2 of the Hotel Druid application that allows for arbitrary execution of JavaScript commands.

Is CVE-2021-37833 actively exploited?

Active exploitation of CVE-2021-37833 has not been confirmed. Its EPSS score was 4.7% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-37833?

CVE-2021-37833 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Running hoteldruid? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, October 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record