CVE-2026-28789: OliveTin gives access to predefined shell commands from a web interface

Q: How do I fix CVE-2026-28789?

olivetin: upgrade to newer than 3000.10.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-28789 being exploited?

CVE-2026-28789 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28789 affect?

CVE-2026-28789 affects olivetin. Severity is high (CVSS 7.5). OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.10.3, an unauthenticated denial-of-service vulnerability exists in OliveTin’s OAuth2 login flow. Concurrent requests to /oauth/login can trigger

Q: How urgent is CVE-2026-28789?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-28789 is a high-severity flaw (CVSS 7.5) affecting olivetin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.10.3, an unauthenticated denial-of-service vulnerability exists in OliveTin’s OAuth2 login flow. Concurrent requests to /oauth/login can trigger unsynchronized access to a shared registeredStates map, causing a Go runtime panic (fatal error: concurrent map writes) and process termination. This allows remote attackers to crash the service when OAuth2 is

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-362, CWE-400, CWE-662
Published	2026-03-05
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: olivetin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-05 20:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

olivetin olivetin UPGRADE

Affected: <= 3000.10.2

Fixed in: newer than 3000.10.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy olivetin || rpm -q olivetin || olivetin --version

2. UPGRADE to newer than 3000.10.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade olivetin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade olivetin

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28789?

olivetin: upgrade to newer than 3000.10.2. Exact commands for each OS are on this page.

Is CVE-2026-28789 being exploited?

CVE-2026-28789 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28789 affect?

CVE-2026-28789 affects olivetin. Severity is high (CVSS 7.5). OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.10.3, an unauthenticated denial-of-service vulnerability exists in OliveTin’s OAuth2 login flow. Concurrent requests to /oauth/login can trigger

How urgent is CVE-2026-28789?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-31817 HIGH 8.5 UPGRADE OliveTin gives access to predefined shell commands from a web interface
CVE-2026-30233 MEDIUM 6.5 UPGRADE OliveTin gives access to predefined shell commands from a web interface
CVE-2026-30225 MEDIUM 5.3 UPGRADE OliveTin gives access to predefined shell commands from a web interface
CVE-2026-30224 MEDIUM 5.4 UPGRADE OliveTin gives access to predefined shell commands from a web interface
CVE-2026-30223 HIGH 8.8 UPGRADE OliveTin gives access to predefined shell commands from a web interface

References

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