How severe is CVE-2026-33738?

CVE-2026-33738 has a CVSS 3.x base score of 5.4, 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-2026-33738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33738?

CVE-2026-33738 affects Lycheeorg Lychee. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33738?

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

Does CVE-2026-33738 have an EU (EUVD) identifier?

Yes. CVE-2026-33738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16417.

When was CVE-2026-33738 published?

CVE-2026-33738 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-33738

CVE-2026-33738 is a medium-severity vulnerability in Lycheeorg Lychee with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 4.8
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16417
Weakness: CWE-79
Affected product: Lycheeorg Lychee
Published: 2026-03-26
Last modified: 2026-06-17

Description

Lychee is a free, open-source photo-management tool. Prior to version 7.5.3, the photo `description` field is stored without HTML sanitization and rendered using `{!! $item->summary !!}` (Blade unescaped output) in the RSS, Atom, and JSON feed templates. The `/feed` endpoint is publicly accessible without authentication, allowing any RSS reader to execute attacker-controlled JavaScript. Version 7.5.3 fixes the issue.

Frequently asked questions

What is CVE-2026-33738?: Lychee is a free, open-source photo-management tool. Prior to version 7.5.3, the photo `description` field is stored without HTML sanitization and rendered using `{!! $item->summary !!}` (Blade unescaped output) in the RSS, Atom, and JSON feed templates. The `/feed` endpoint is publicly accessible without authentication, allowing any RSS reader to execute attacker-controlled JavaScript. Version 7.5.3 fixes the issue.
How severe is CVE-2026-33738?: CVE-2026-33738 has a CVSS 3.x base score of 5.4, 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-2026-33738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33738?: CVE-2026-33738 affects Lycheeorg Lychee. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33738 have an EU (EUVD) identifier?: Yes. CVE-2026-33738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16417.
When was CVE-2026-33738 published?: CVE-2026-33738 was published on 2026-03-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lycheeorg:lychee:*:*:*:*:*:*:*:*

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