CVE-2022-22138: All versions of package fast-string-search are vulnerable to Denial of Service (DoS) when computations are inc

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HIGH 7.5REMOTEMITIGATE

CVE-2022-22138 is a high-severity flaw (CVSS 7.5) affecting fast string search. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

All versions of package fast-string-search are vulnerable to Denial of Service (DoS) when computations are incorrect for non-string inputs. One can cause the V8 to attempt reading from non-permitted locations and cause a segmentation fault due to the violation.

Why this priority

High 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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-682
Published	2022-06-17
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: fast string search project

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

Am I affected?

Timeline

2022-06-17 20:15 UTCPublished CVE record published
2026-06-17 04:27 UTCUpdated Record last modified

fast string search project fast string search MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls fast-string-search

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-2022-22138?

fast string search: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-22138 being exploited?

CVE-2022-22138 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-2022-22138 affect?

CVE-2022-22138 affects fast string search. Severity is high (CVSS 7.5). All versions of package fast-string-search are vulnerable to Denial of Service (DoS) when computations are incorrect for non-string inputs. One can cause the V8 to attempt reading from non-permitted locations and cause a segmentation fault

How urgent is CVE-2022-22138?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-25872 MEDIUM 5.3 MITIGATE All versions of package fast-string-search are vulnerable to Out-of-bounds Read due to incorrect memory freein

References

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