How severe is CVE-2026-44479?

CVE-2026-44479 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-44479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44479?

CVE-2026-44479 affects Vercel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44479 have an EU (EUVD) identifier?

Yes. CVE-2026-44479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30050.

When was CVE-2026-44479 published?

CVE-2026-44479 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-44479

CVE-2026-44479 is a medium-severity vulnerability in Vercel with a CVSS 3.x base score of 5.5. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30050
Weakness: CWE-200
Affected product: Vercel
Published: 2026-05-13
Last modified: 2026-06-17

Description

Vercel’s AI Cloud is a unified platform for building modern applications. From 50.16.0 to 52.0.0, hen the Vercel CLI runs in non-interactive mode (--non-interactive or auto-detected AI agent), commands that cannot complete autonomously emit JSON payloads with suggested follow-up commands. If the user authenticated via --token or -t on the command line, the token value is included verbatim in those suggestions. The plaintext token may be captured in CI/CD logs, agent transcripts, or other automation output. This vulnerability is fixed in 52.0.1.

Frequently asked questions

What is CVE-2026-44479?: Vercel’s AI Cloud is a unified platform for building modern applications. From 50.16.0 to 52.0.0, hen the Vercel CLI runs in non-interactive mode (--non-interactive or auto-detected AI agent), commands that cannot complete autonomously emit JSON payloads with suggested follow-up commands. If the user authenticated via --token or -t on the command line, the token value is included verbatim in those suggestions. The plaintext token may be captured in CI/CD logs, agent transcripts, or other automation output. This vulnerability is fixed in 52.0.1.
How severe is CVE-2026-44479?: CVE-2026-44479 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-44479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44479?: CVE-2026-44479 affects Vercel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44479 have an EU (EUVD) identifier?: Yes. CVE-2026-44479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30050.
When was CVE-2026-44479 published?: CVE-2026-44479 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://github.com/vercel/vercel/security/advisories/GHSA-pgf8-2hgj-grqg

Affected products (1)

cpe:2.3:a:vercel:vercel:*:-:*:*:*:node.js:*:*

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