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CVE-2026-4881 (GCVE-0-2026-4881)

Vulnerability from cvelistv5 – Published: 2026-06-04 08:49 – Updated: 2026-06-04 13:05
VLAI
Summary
In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 12:46 UTC
CWE
  • Insufficient permission checks on an API endpoint
  • CWE-862 - Missing Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
Octopus Deploy Octopus Server Affected: 2023.0.0 , < 2025.4.10523 (custom)
Affected: 2025.4.0 , < 2025.4.10545 (custom)
Affected: 2026.1.0 , < 2026.1.11313 (custom)
guessed Create a notification for this product.
Credits
This vulnerability was found by MononcleMich
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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