CVE-2026-18738

Published: Ago 03, 2026 Last Modified: Ago 04, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 4,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: changed
Confidentiality: low
Integrity: none
Availability: none

Description

AI Translation Available

Shlink versions 5.0.0 through 5.1.5 contain a CSV formula injection vulnerability that allows unauthenticated remote attackers to 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 @. Attackers can craft a single unauthenticated request against any short URL to embed DDE or WEBSERVICE formula payloads into CSV cells, which are then executed on an administrator's client machine when the exported CSV file is opened in a spreadsheet application that evaluates formulas.

1236

Improper Neutralization of Formula Elements in a CSV File

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality
Potential Impacts:
Read Application Data Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: Other
View CWE Details
https://github.com/shlinkio/shlink
https://github.com/shlinkio/shlink
https://github.com/theopaid/CSV-formula-injection-in-visit-…
https://github.com/theopaid/CSV-formula-injection-in-visit-exports-shlink-
https://www.vulncheck.com/advisories/shlink-csv-formula-inj…
https://www.vulncheck.com/advisories/shlink-csv-formula-injection-via-visit-exp…