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CVE-2022-35923

23
FAUCET Score

CVE-2022-35923 affects v8n, a JavaScript validation library, specifically versions prior to 1.5.1. The vulnerability stems from inefficient regular expression complexity in the lowercase() and uppercase() functions, leading to a Regular Expression Denial of Service (ReDoS) attack. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially causing a denial of service. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.1CPE matchmatch criteria
cpe:2.3:a:v8n_project:v8n:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.36%
Probability of exploitation in next 30 days
EPSS Percentile
68.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0136 is in the 49th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: v8nFixed in: 1.5.1

Vendor Advisories (1)

npmGHSA-xrx9-gj26-5wx9high

v8n vulnerable to Inefficient Regular Expression Complexity

Oct 7, 2022

References

github.com / imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9
PatchThird Party Advisory
github.com / imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9
Third Party Advisory
huntr.dev / bounties/2d92f644-593b-43b4-bfd1-c8042ac60609
ExploitThird Party Advisory