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CVE-2026-18738: Shlink 5.0.0 through 5.1.5
CVE-2026-18738. CVSS 3.1 base score 4.7 (MEDIUM, Vendor/CNA). EPSS 0.00493 (percentile 0.41451), scored 22-Oct-2026.
Affected technology
Shlink · 5.0.0 through 5.1.5
shlinkio
Description’s affected range: versions 5.0.0 through 5.1.5
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · Active user interaction
What an attacker can do
Unauthenticated remote attackers can plant spreadsheet formulas into exported visit data by supplying malicious values in User-Agent, Referer, or request path headers beginning with formula-triggering characters such as =, +, -, or @. Vendor/CNA’s CVSS 4.0 assessment (base score 5.1/10) rates confidentiality and availability impact as none; integrity impact as low.
- CWE
- CWE-1236
- CCR priority
- 18.9 /100 (P5)
- CVSS 3.1
- 4.7 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N · Vendor/CNA
- EPSS
- 0.00493 · percentile 0.41451 · 2026-10-22
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-18738.html