Medium 4.2Published Oct 10, 2026

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

Updated under an hour ago (Oct 28, 2026, 2:50 AM ET)

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It affects Openpanel-dev openpanel. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Openpanel-dev openpanel

Exploited in the last 30 days

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.

CVSS: 4.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-1236
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 10, 2026

Affected products

Affected products

Openpanel-dev openpanel openpanel_dev:openpanel (from the name)	through 2.3.0	CNA record

References

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
https://www.vulncheck.com/advisories/openpanel-through-2.3.0-csv-formula-injection-via-cohort-member-export	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.