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Fencer Vulns
critical 9.8

CVE-2024-8954 json

Authentication Bypass in composiohq/composio

published 2025-03-20 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-6881

cvss
9.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

In composiohq/composio version 0.5.10, the API does not validate the `x-api-key` header's value during the authentication step. This vulnerability allows an attacker to bypass authentication by providing any random value in the `x-api-key` header, thereby gaining unauthorized access to the server.

CISA SSVC

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

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/f1e0fdce-00d7-4261-a466-923062800b12 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • composiohq composiohq/composio

Classification

Weakness
  • CWE-304 Missing Critical Step in Authentication

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.