CVE-2026-4881
📛 CVE Title
CVE-2026-4881
Description
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.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Octopus
- CVSS severity
- MEDIUM
- CVSS score
- 6.0 / 10
- CVSS vector
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- Effective score
- 6.0 / 10 MEDIUM source: CNA overview
- CWE(s)
- —
- Reserved
- 2026-03-26
- Published
- 2026-06-04 08:49 UTC
- Last updated
- 2026-06-04 13:05 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4881.json
- Linked Threat
- CVE-2026-4881 — CVE-2026-4881
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-06-04 10:16:39 UTC
- NVD last modified
- 2026-06-30 19:00:10 UTC
- NVD CVSS v3.1
- 6.5 / 10 MEDIUM source: nvd@nist.gov
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 2.8 / 10
- Impact subscore
- 3.6 / 10
- EPSS score
- 0.0021 (probability of exploitation in next 30 days)
- EPSS percentile
- 10.83% vs all CVEs — higher = more likely to be exploited, as of 2026-06-30
NVD-assigned CWE(s):
CWE-862
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-06-30 22:20 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-34227 - Assigner
- Octopus
- Published
- Jun 4, 2026, 8:49:59 AM
- Updated
- Jun 4, 2026, 1:05:54 PM
- EUVD base score (CVSS 4.0)
-
6.0 / 10
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 - EUVD-reported EPSS
- 0.2100
- Vendors
- Octopus Deploy
- Products
-
Octopus Server (2026.1.0 <2026.1.11313)Octopus Server (2025.4.0 <2025.4.10545)Octopus Server (2023.0.0 <2025.4.10523)
- Aliases
-
GHSA-hw3f-962q-p4vj
ENISA description: 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.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Octopus Deploy | Octopus Server |
2023.0.0 (affected),
2025.4.0 (affected),
2026.1.0 (affected)
|
Windows, Linux |
Affected products — CPE 2.3 (1) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (4)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://advisories.octopus.com/post/2026/sa2026-04 tenable:advisories.octopus.com
- https://nvd.nist.gov/vuln/detail/CVE-2026-4881 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-4881 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://advisories.octopus.com/post/2026/sa2026-04 security@octopus.com Vendor Advisory
Remediations (20)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:access.redhat.com
The mitigation methods below address both vulnerabilities that affect Red Hat products — CVE - 2026 -43284 (IPsec ESP) and CVE - 2026 -46300 (XFRM ESP-in-TCP). CVE - 2026 -43500 (rxrpc) does not affect Red Hat products and requires no mitigation .
2026-06-08 15:48 UTC -
web:arcraiders.com
ARC Raiders is a multiplayer extraction adventure, set in a lethal future earth, ravaged by a mysterious mechanized threat known as ARC.
2026-06-08 15:48 UTC -
web:epatch.pa.gov
Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...
2026-06-08 15:48 UTC -
web:officialfixdessertchocolatier.com
Indulge in Dubai's viral chocolate bars with FIX Dessert Chocolatier. Shop our hero collection featuring Baklawa, Knafeh, Biscoff, and more. Fast delivery in Dubai & Abu Dhabi. Order now!
2026-06-08 15:48 UTC -
web:patch.com
North Fork Latest Headlines: Man Arrested After Stabbing Family Member In Manorville Saturday: Police; 'Hot Dog,' Stray Pup With 'Cutest Smile,' Waiting For Forever Home; Severe Thunderstorms ...
2026-06-08 15:48 UTC -
web:patchnashville.com
Patch was born out of a love of children's fashion and classic yet modern gifting. The goal was to create a timeless yet modern boutique with a playful touch featuring children's clothing, gifts, & accessories. My hope is that you always find what you came for and feel as inspired by our collections as we are.
2026-06-08 15:48 UTC -
web:techcommunity.microsoft.com
Exchange Online is not impacted by this vulnerability. Mitigations Option 1 (recommended): Exchange Emergency Mitigation (EM) Service For customers who have the Exchange EM Service enabled, Microsoft released the automatic mitigation for Exchange Server 2016, 2019 and SE. The mitigation is already published and is enabled automatically.
2026-06-08 15:48 UTC -
web:www.leagueoflegends.com
League of Legends Patch 26.5 Notes Welcome to the official patch of First Stand, the first major international tournament of the year!
2026-06-08 15:48 UTC -
web:www.oracle.com
Oracle Critical Patch Update Advisory - January 2026 Description A Critical Patch Update is a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and in third party components included in Oracle products. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical ...
2026-06-08 15:48 UTC -
web:www.romhacking.net
Add temporary header() Patch file: Apply patch Original ROM: Modified ROM: Patch type: IPS BPS PPF UPS APS RUP Create patch Settings Rom Patcher JS v2.9 by Marc Robledo See on GitHub Donate Language English Français Deutsch Italiano Español Nederlands Svenska Català Valencià Português Brasileiro Russian 日本語 中文（简体） 中文 ...
2026-06-08 15:48 UTC -
web:helpx.adobe.com
This page contains important information regarding security vulnerabilities that could affect specific versions of Adobe products. Use this information to take the prescribed corrective actions.
2026-06-19 02:34 UTC -
web:msrc.microsoft.com
Security Update Guide - Microsoft Security Response Center
2026-06-19 02:34 UTC -
web:nvd.nist.gov
The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...
2026-06-19 02:34 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-19 02:34 UTC -
web:support.sap.com
SAP security Patch Day Bulletin
2026-06-19 02:34 UTC -
web:www.csoonline.com
Microsoft released emergency fixes for two zero-day vulnerabilities in the malware protection components of Microsoft Defender. The flaws allow local attackers to gain system-level privileges or ...
2026-06-19 02:34 UTC -
web:www.linkedin.com
Microsoft has confirmed that it is developing a security update to address a newly disclosed zero-day vulnerability in Microsoft Defender, following the public release of exploit code that ...
2026-06-19 02:34 UTC -
web:www.malwarebytes.com
Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.
2026-06-19 02:34 UTC -
web:www.oracle.com
This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.
2026-06-19 02:34 UTC -
web:www.veeam.com
When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line with our dedication to transparency, we publicly disclose the vulnerability and provide detailed mitigation information.
2026-06-19 02:34 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-4881.json.
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