CVE-2026-45036: Tabby (formerly Terminus) is a highly configurable terminal emulator

Q: How do I fix CVE-2026-45036?

tabby: upgrade to 1.0.233. Exact commands for each OS are on this page.

Q: Is CVE-2026-45036 being exploited?

CVE-2026-45036 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-2026-45036 affect?

CVE-2026-45036 affects tabby. Severity is high (CVSS 7.0). Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby before 1.0.233 automatically confirms ZMODEM protocol detection on all terminal session output without user interaction, enabling shell command ex

Routine

HIGH 7.0UPGRADE

CVE-2026-45036 is a high-severity flaw (CVSS 7.0) affecting tabby. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby before 1.0.233 automatically confirms ZMODEM protocol detection on all terminal session output without user interaction, enabling shell command execution when a user displays attacker-controlled content. The ZModemMiddleware in tabby-terminal consumes all session output through a Zmodem.Sentry, and when a ZMODEM ZRQINIT header is detected, unconditionall

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.0 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-05-15
Last modified	2026-10-26

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

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-15 17:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

tabby tabby UPGRADE

Affected: < 1.0.233

Fixed in: 1.0.233

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.0.233 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tabby

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-2026-45036?

tabby: upgrade to 1.0.233. Exact commands for each OS are on this page.

Is CVE-2026-45036 being exploited?

CVE-2026-45036 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-2026-45036 affect?

CVE-2026-45036 affects tabby. Severity is high (CVSS 7.0). Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby before 1.0.233 automatically confirms ZMODEM protocol detection on all terminal session output without user interaction, enabling shell command ex

How urgent is CVE-2026-45036?

Priority 25/100. High severity

Related CVEs

CVE-2026-45035 HIGH 8.8 UPGRADE Tabby (formerly Terminus) is a highly configurable terminal emulator
CVE-2026-45037 HIGH 7.1 UPGRADE Tabby (formerly Terminus) is a highly configurable terminal emulator
CVE-2026-45038 HIGH 7.8 UPGRADE Tabby (formerly Terminus) is a highly configurable terminal emulator
CVE-2026-46709 HIGH 7.8 UPGRADE Tabby (formerly Terminus) is a highly configurable terminal emulator

References

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