CVE-2021-23377: This affects all versions of package onion-oled-js

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CRITICAL 9.8REMOTEMITIGATE

CVE-2021-23377 is a critical-severity flaw (CVSS 9.8) affecting onion-oled-js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This affects all versions of package onion-oled-js. If attacker-controlled user input is given to the scroll function, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.0% (top 13%)
CISA exploited list	No
Weakness	CWE-78
Published	2021-04-18
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: onion-oled-js project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-04-18 19:15 UTCPublished CVE record published
2026-06-17 03:38 UTCUpdated Record last modified

onion-oled-js project onion-oled-js MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls onion-oled-js

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-23377?

onion-oled-js: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-23377 being exploited?

CVE-2021-23377 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-23377 affect?

CVE-2021-23377 affects onion-oled-js. Severity is critical (CVSS 9.8). This affects all versions of package onion-oled-js. If attacker-controlled user input is given to the scroll function, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function witho

How urgent is CVE-2021-23377?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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