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Fencer Intel
critical 9.8

CVE-2024-21855 json

A lack of authentication vulnerability exists in the HTTP API functionality of GoCast 1.1.3.

published last yr. modified 4mo ago also EUVD-2024-19466

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

A lack of authentication vulnerability exists in the HTTP API functionality of GoCast 1.1.3. A specially crafted HTTP request can lead to arbitrary command execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
last yr.

Exploit prediction

2.04% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • GoCast GoCast

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Intel 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.