CVE-2023-33187 json
highlight vulnerable to cleartext transmission of sensitive information
published 2023-05-26 3 y ago modified 2026-06-17 4 mo ago also GHSA-9qpj-qq2r-5mcc , EUVD-2023-1518
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | highlight.run | <6.0.0 |
6.0.0 |
Affected products
- highlight highlight
Classification
- Weakness
-
- CWE-319 Cleartext Transmission of Sensitive Information
References
-
github.com
/rrweb-io/rrweb/pull/1184
web, issue-tracking, patch
-
github.com
/highlight/highlight/security/advisories/GHSA-9qpj-qq2r-5mcc
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-33187
advisory
-
github.com
/highlight/highlight
package
Sources
- CVE List CVE-2023-33187
- GitHub Advisory GHSA-9qpj-qq2r-5mcc
- NVD CVE-2023-33187
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