Riskcovery

CVE-2023-23603

Calls to console.log allowed bypassing Content Security Policy via format directive

State
Published
Severity
6.5 Medium
Published
Jun 2, 2023
Updated
Dec 18, 2025
Reserved
Jan 16, 2023

Read the record on cve.org

Description

Regular expressions used to filter out forbidden properties and values from style directives in calls to `console.log` weren't accounting for external URLs. Data could then be potentially exfiltrated from the browser. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.

Scores

CVSSScoreVectorSource
3.16.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NCISA-ADP

Weaknesses

  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
FirefoxMozilla
  • before 109Affected
Firefox ESRMozilla
  • before 102.7Affected
ThunderbirdMozilla
  • before 102.7Affected

References

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