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CVE-2021-23784

20
FAUCET Score

CVE-2021-23784 is a Cross-Site Scripting (XSS) vulnerability affecting versions of the tempura package prior to 0.4.0. It arises when the 'esc' function receives an object (like an array) as input, failing to properly escape or sanitize it. With a CVSS score of 6.1 (Medium), this vulnerability has a network attack vector, low attack complexity, and requires user interaction, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.0CPE matchmatch criteria
cpe:2.3:a:tempura_project:tempura:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.22%
Probability of exploitation in next 30 days
EPSS Percentile
65.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0122 is in the 78th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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: tempuraFixed in: 0.4.0

Vendor Advisories (1)

npmGHSA-w4v7-hwx7-9929medium

Cross-site Scripting in tempura

Nov 8, 2021

References

github.com / lukeed/tempura/commit/58a5c3671e2f36b26810e77ead9e0dd471902f9b
PatchThird Party Advisory
github.com / lukeed/tempura/releases/tag/v0.4.0
Release NotesThird Party Advisory
snyk.io / vuln/SNYK-JS-TEMPURA-1569633
ExploitMitigationPatchThird Party AdvisoryVDB Entry