CVE-2026-27626Public exploitNetwork attack vector

Remote command execution via shell safety bypass

Published Feb 25, 2026 · Updated Feb 25, 2026

OS command injection in OliveTin 3000.10.0 and earlier allows remote attackers to execute commands through crafted action arguments. checkShellArgumentSafety accepts shell metacharacters in password values, while webhook-extracted JSON bypasses type checks before reaching sh -c. Authenticated action access enables the first path; externally sourced webhooks and Shell mode enable unauthenticated execution with OliveTin process privileges.

CVSS severity9.9
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in OliveTin 3000.10.0 and earlier allows remote attackers to execute commands through crafted action arguments. checkShellArgumentSafety accepts shell metacharacters in password values, while webhook-extracted JSON bypasses type checks before reaching sh -c. Authenticated action access enables the first path; externally sourced webhooks and Shell mode enable unauthenticated execution with OliveTin process privileges.

The record

CVE
CVE-2026-27626
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
OliveTin
Product
OliveTin
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 3000.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OliveTin · OliveTinversion=<= 3000.10.0

Published CVSS scores

9.9GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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