7.8

CVE-2021-29261: svelte

Modified
Published 05-04-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-29261 is a high (CVSS 7.8) vulnerability in svelte. EPSS estimates a 1.37% chance of exploitation in the next 30 days, higher than 72% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.37%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 05-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The unofficial Svelte extension before 104.8.0 for Visual Studio Code allows attackers to execute arbitrary code via a crafted workspace configuration.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.37%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

Increase +0.14 pp

From 1.24% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Svelte1 product

1 vendor · 1 product

References

5 links