How severe is CVE-2026-26993?

CVE-2026-26993 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-26993 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-2026-26993?

CVE-2026-26993 affects Flintsh Flare. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26993?

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

Does CVE-2026-26993 have an EU (EUVD) identifier?

Yes. CVE-2026-26993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7581.

When was CVE-2026-26993 published?

CVE-2026-26993 was published on 2026-02-20 and last updated on 2026-06-17.

CVE-2026-26993

CVE-2026-26993 is a medium-severity vulnerability in Flintsh Flare with a CVSS 3.x base score of 4.6. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7581
Weakness: CWE-79
Affected product: Flintsh Flare
Published: 2026-02-20
Last modified: 2026-06-17

Description

Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Versions 1.7.0 and below allow users to upload files without proper content validation or sanitization. By embedding malicious JavaScript within an SVG (or other active content formats such as HTML or XML), an attacker can achieve script execution in the context of the application's origin when a victim views the file in “raw” mode. This results in a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to exfiltrate user data. This issue has been fixed in version 1.7.1.

Frequently asked questions

What is CVE-2026-26993?: Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Versions 1.7.0 and below allow users to upload files without proper content validation or sanitization. By embedding malicious JavaScript within an SVG (or other active content formats such as HTML or XML), an attacker can achieve script execution in the context of the application's origin when a victim views the file in “raw” mode. This results in a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to exfiltrate user data. This issue has been fixed in version 1.7.1.
How severe is CVE-2026-26993?: CVE-2026-26993 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-26993 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-2026-26993?: CVE-2026-26993 affects Flintsh Flare. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-26993 have an EU (EUVD) identifier?: Yes. CVE-2026-26993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7581.
When was CVE-2026-26993 published?: CVE-2026-26993 was published on 2026-02-20 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Flintsh Flare

CVE-2026-30230 — High (CVSS 7.5): Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version…
CVE-2026-30942 — Medium (CVSS 6.5): Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to 1.7.3, an…
CVE-2026-30231 — Medium (CVSS 5.3): Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version…

All CVEs affecting Flintsh Flare →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →