CVE-2026-18644

A vulnerability was identified in danpros HTMLy up to 3.1.1. Affected by this issue is the function unlink of the file /system/htmly.php of the component Delete Username Endpoint. Such manipulation of the argument File leads to path traversal. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v4.0

2.1 LOWCVSS: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 v3.1

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

CVSS v2.0

5.5 MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:P

EPSS

0.37% chance of exploitation in the next 30 days, 30th percentile

Published

2026-08-03

Proof-of-concept exploits (1)

• orionyan520/cve_report/issues/5

References

• CVE Record
• NVD entry

Related

• CVE-2026-14770
• CVE-2026-14771
• CVE-2026-14772
• CVE-2026-18645
• CVE-2026-18646
• CVE-2026-18647