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Fencer Vulns
critical 10.0

CVE-2024-39008 json

robinweser fast-loops vulnerable to prototype pollution

published 2024-07-01 2 y ago modified 2026-06-17 4 mo ago also GHSA-3q56-9cc2-46j4 , EUVD-2024-2238

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

robinweser fast-loops v1.1.3 was discovered to contain a prototype pollution via the function objectMergeDeep. This vulnerability allows attackers to execute arbitrary code or cause a Denial of Service (DoS) via injecting arbitrary properties.

Patch / fix

  • npm fast-loops 1.1.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-39008 updated cvss 6.5

fast-loops: prototype pollution via objectMergeDeep

  • Red Hat Developer Hub 1.3 for RHEL 9 rhdh/rhdh-hub-rhel9 1.3-100
    fixed: vendor fix RHBA-2024:7523
  • Red Hat Developer Hub 1.3 for RHEL 9 rhdh/rhdh-rhel9-operator 1.3-96, rhdh/rhdh-operator-bundle 1.3-95
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
npm fast-loops
<1.1.4
1.1.4

Affected products

  • robinweser fast-loops

Classification

Weakness
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.