Read the docs
TI-2023-16364 Aliases CVE-2023-33187GHSA-9qpj-qq2r-5mcc

highlight vulnerable to cleartext transmission of sensitive information

Priority LOW 29CWE-319Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-319.

Summary

Highlight is an open source, full-stack monitoring platform. Highlight may record passwords on customer deployments when a password html input is switched to `type="text"` via a javascript "Show Password" button. This differs from the expected behavior which always obfuscates `type="password"` inputs. A customer may assume that switching to `type="text"` would also not record this input; hence, they would not add additional `highlight-mask` css-class obfuscation to this part of the DOM, resulting in unintentional recording of a password value when a `Show Password` button is used. This issue was patched in version 6.0.0. This patch tracks changes to the `type` attribute of an input to ensure an input that used to be a `type="password"` continues to be obfuscated.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00285 21st percentileScored 2026-11-07
Fix Fixed highlight (highlight): 6.0.0highlight.run (npm): 6.0.0

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

VendorProductAffected versionsFixed inStatusSource
highlighthighlightbefore 6.0.06.0.0Patch availableCNA
—highlight.run (npm)before 6.0.06.0.0Patch availableGHSA-9qpj-qq2r-5mcc
  • highlight Vendorhighlight Affected before 6.0.0 Fixed in 6.0.0 Patch available CNA
  • highlight.run (npm) Vendor— Affected before 6.0.0 Fixed in 6.0.0 Patch available GHSA-9qpj-qq2r-5mcc

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:highlight:highlight:*:*:*:*:*:node.js:*:*before 6.0.0Vulnerablehighlight
  • cpe:2.3:a:highlight:highlight:*:*:*:*:*:node.js:*:* Versions before 6.0.0 Vulnerable ·highlight

Remediation

  • Fix · CNA highlight (highlight) Fixed in 6.0.0
  • Fix · GHSA-9qpj-qq2r-5mcc highlight.run (npm) Fixed in 6.0.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-33187
  2. 2026-10-03 Alias added: GHSA-9qpj-qq2r-5mcc

References

Patch 1

Advisory 2

Other 1

Sources

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