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Fencer Vulns
critical 9.8

CVE-2023-46480 json

OwnCast remote code execution vulnerability

published 2023-11-27 2 y ago modified 2026-06-17 4 mo ago also GHSA-392h-r46j-q24p , EUVD-2023-2857

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

An issue in OwnCast v.0.1.1 allows a remote attacker to execute arbitrary code and obtain sensitive information via the authHost parameter of the indieauth function.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
17 mo ago

Exploit prediction

1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

ecosystem package affected fixed in
go github.com/owncast/owncast
<=0.1.1
no fix listed

Affected products

  • owncast_project owncast

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
  • CWE-918 Server-Side Request Forgery

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.