How severe is CVE-2026-45035?

CVE-2026-45035 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-45035 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45035?

CVE-2026-45035 affects Tabby. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45035?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-45035 have an EU (EUVD) identifier?

Yes. CVE-2026-45035 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30568.

When was CVE-2026-45035 published?

CVE-2026-45035 was published on 2026-05-15 and last updated on 2026-06-17.

CVE-2026-45035

CVE-2026-45035 is a high-severity vulnerability in Tabby with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 9.4
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30568
Weakness: CWE-78
Affected product: Tabby
Published: 2026-05-15
Last modified: 2026-06-17

Description

Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby registers itself as the handler for the tabby:// URL scheme on all platforms. The URL scheme handler supports a run command that directly executes OS commands with no user confirmation, sanitization, or sandboxing. An attacker can craft a malicious link (tabby://run?command=...) and deliver it via a website, email, chat message, or any other medium. When a victim clicks the link, the OS launches Tabby which immediately spawns the specified command as a child process with the user's full privileges. This is a zero-click-after-link-visit RCE vulnerability. This vulnerability is fixed in 1.0.233.

Frequently asked questions

What is CVE-2026-45035?: Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.233, Tabby registers itself as the handler for the tabby:// URL scheme on all platforms. The URL scheme handler supports a run command that directly executes OS commands with no user confirmation, sanitization, or sandboxing. An attacker can craft a malicious link (tabby://run?command=...) and deliver it via a website, email, chat message, or any other medium. When a victim clicks the link, the OS launches Tabby which immediately spawns the specified command as a child process with the user's full privileges. This is a zero-click-after-link-visit RCE vulnerability. This vulnerability is fixed in 1.0.233.
How severe is CVE-2026-45035?: CVE-2026-45035 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-45035 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45035?: CVE-2026-45035 affects Tabby. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45035?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-45035 have an EU (EUVD) identifier?: Yes. CVE-2026-45035 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30568.
When was CVE-2026-45035 published?: CVE-2026-45035 was published on 2026-05-15 and last updated on 2026-06-17.

References

https://github.com/Eugeny/tabby/security/advisories/GHSA-hf8h-rjrf-3jg6

Affected products (1)

cpe:2.3:a:tabby:tabby:*:*:*:*:*:*:*:*

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