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CVE-2026-18645

MEDIUMCVSS 5.4/10EPSS 0.43%

Last modified

CVE-2026-18645 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A security flaw has been discovered in danpros HTMLy up to 3.1.1. This affects the function add_content of the file /system/admin/admin.php of the component Admin Content Endpoint. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A security flaw has been discovered in danpros HTMLy up to 3.1.1. This affects the function add_content of the file /system/admin/admin.php of the component Admin Content Endpoint. Performing a manipulation of the argument oldfile results in path traversal. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1
5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS 4.0
2.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.0
5.4/10

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

EPSS Probability
0.43%

35.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
danprosHTMLy3.1.0; 3.1.1

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-18645?
A security flaw has been discovered in danpros HTMLy up to 3.1.1. This affects the function add_content of the file /system/admin/admin.php of the component Admin Content Endpoint. Performing a manipulation of the argument oldfile results in path traversal. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-18645?
CVE-2026-18645 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2026-18645?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST