How severe is CVE-2026-30231?

CVE-2026-30231 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-30231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30231?

CVE-2026-30231 affects Flintsh Flare. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30231?

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

Does CVE-2026-30231 have an EU (EUVD) identifier?

Yes. CVE-2026-30231 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10077.

When was CVE-2026-30231 published?

CVE-2026-30231 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-30231

CVE-2026-30231 is a medium-severity vulnerability in Flintsh Flare with a CVSS 3.x base score of 5.3. 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-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.0
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10077
Weakness: CWE-639
Affected product: Flintsh Flare
Published: 2026-03-06
Last modified: 2026-06-17

Description

Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the raw and direct file routes only block unauthenticated users from accessing private files. Any authenticated, non‑owner user who knows the file URL can retrieve the content, which is inconsistent with stricter checks used by other endpoints. This issue has been patched in version 1.7.2.

Frequently asked questions

What is CVE-2026-30231?: Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the raw and direct file routes only block unauthenticated users from accessing private files. Any authenticated, non‑owner user who knows the file URL can retrieve the content, which is inconsistent with stricter checks used by other endpoints. This issue has been patched in version 1.7.2.
How severe is CVE-2026-30231?: CVE-2026-30231 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-30231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30231?: CVE-2026-30231 affects Flintsh Flare. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30231 have an EU (EUVD) identifier?: Yes. CVE-2026-30231 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10077.
When was CVE-2026-30231 published?: CVE-2026-30231 was published on 2026-03-06 and last updated on 2026-06-17.

References

https://github.com/FlintSH/Flare/security/advisories/GHSA-gwqr-xf5c-5569

Affected products (1)

cpe:2.3:a:flintsh:flare:*:*:*:*:*:*:*:*

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