How severe is CVE-2026-23840?

CVE-2026-23840 has a CVSS 3.x base score of 9.3, rated critical 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 none.

Is CVE-2026-23840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23840?

CVE-2026-23840 affects Leepeuker Movary. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23840?

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

Does CVE-2026-23840 have an EU (EUVD) identifier?

Yes. CVE-2026-23840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3301.

When was CVE-2026-23840 published?

CVE-2026-23840 was published on 2026-01-19 and last updated on 2026-06-17.

CVE-2026-23840

CVE-2026-23840 is a critical-severity vulnerability in Leepeuker Movary with a CVSS 3.x base score of 9.3. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3301
Weakness: CWE-20
Affected product: Leepeuker Movary
Published: 2026-01-19
Last modified: 2026-06-17

Description

Movary is a web application to track, rate and explore your movie watch history. Due to insufficient input validation, attackers can trigger cross-site scripting payloads in versions prior to 0.70.0. The vulnerable parameter is `?categoryDeleted=`. Version 0.70.0 fixes the issue.

Frequently asked questions

What is CVE-2026-23840?: Movary is a web application to track, rate and explore your movie watch history. Due to insufficient input validation, attackers can trigger cross-site scripting payloads in versions prior to 0.70.0. The vulnerable parameter is `?categoryDeleted=`. Version 0.70.0 fixes the issue.
How severe is CVE-2026-23840?: CVE-2026-23840 has a CVSS 3.x base score of 9.3, rated critical 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 none.
Is CVE-2026-23840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23840?: CVE-2026-23840 affects Leepeuker Movary. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23840?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-23840 have an EU (EUVD) identifier?: Yes. CVE-2026-23840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3301.
When was CVE-2026-23840 published?: CVE-2026-23840 was published on 2026-01-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:leepeuker:movary:*:*:*:*:*:*:*:*

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