How severe is CVE-2026-33686?

CVE-2026-33686 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33686?

CVE-2026-33686 affects Code16 Sharp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33686?

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

Does CVE-2026-33686 have an EU (EUVD) identifier?

Yes. CVE-2026-33686 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16446.

When was CVE-2026-33686 published?

CVE-2026-33686 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-33686

CVE-2026-33686 is a high-severity vulnerability in Code16 Sharp with a CVSS 3.x base score of 8.8. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16446
Weakness: CWE-22
Affected product: Code16 Sharp
Published: 2026-03-26
Last modified: 2026-06-17

Description

Sharp is a content management framework built for Laravel as a package. Versions prior to 9.20.0 have a path traversal vulnerability in the FileUtil class. The application fails to sanitize file extensions properly, allowing path separators to be passed into the storage layer. In `src/Utils/FileUtil.php`, the `FileUtil::explodeExtension()` function extracts a file's extension by splitting the filename at the last dot. This issue has been patched in version 9.20.0 by properly sanitizing the extension using `pathinfo(PATHINFO_EXTENSION)` instead of `strrpos()`, alongside applying strict regex replacements to both the base name and the extension.

Frequently asked questions

What is CVE-2026-33686?: Sharp is a content management framework built for Laravel as a package. Versions prior to 9.20.0 have a path traversal vulnerability in the FileUtil class. The application fails to sanitize file extensions properly, allowing path separators to be passed into the storage layer. In `src/Utils/FileUtil.php`, the `FileUtil::explodeExtension()` function extracts a file's extension by splitting the filename at the last dot. This issue has been patched in version 9.20.0 by properly sanitizing the extension using `pathinfo(PATHINFO_EXTENSION)` instead of `strrpos()`, alongside applying strict regex replacements to both the base name and the extension.
How severe is CVE-2026-33686?: CVE-2026-33686 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33686?: CVE-2026-33686 affects Code16 Sharp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33686 have an EU (EUVD) identifier?: Yes. CVE-2026-33686 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16446.
When was CVE-2026-33686 published?: CVE-2026-33686 was published on 2026-03-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:code16:sharp:*:*:*:*:*:*:*:*

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