Vulnerability · Published Oct 10, 2026 · Assigned by VulnCheck

CVE-2026-108579OpenPanel through 2.3.0 CSV Formula Injection via Cohort Member Export

Medium 4.2

In plain English

A medium-severity security flaw in openpanel from Openpanel-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).

Severity (CVSS 3.1)4.2Medium

Exploit odds (30 days)0.2%top 90.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenPanel through 2.3.0 contains a CSV formula injection vulnerability that allows unauthenticated attackers to embed spreadsheet formulas by supplying crafted profile IDs to the /track endpoint. Attackers can send tracking events with profile IDs like =HYPERLINK(...) matching a cohort, so exported cohort CSVs execute formulas that exfiltrate adjacent cell data.

Affected products (as reported)

Vendor	Product	Versions
Openpanel-dev	openpanel	0 – through 2.3.0

Weakness: CWE-1236 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

References

https://hackmd.io/@haind/openpanel-cohort-csv-formula-injection third-party-advisory
https://github.com/Openpanel-dev/openpanel/blob/7c4d22ae4b6b20fb08eb5c94a0cd3cfebb3d32ca/apps/start/src/utils/csv-download.ts#L1-L29 technical-description
https://github.com/Openpanel-dev/openpanel product
VulnCheck Advisory: OpenPanel through 2.3.0 CSV Formula Injection via Cohort Member Export third-party-advisory