# CVE-2026-108563: Revive Adserver spreadsheet formula injection in report exports

Source: https://junglewise.ai/threats/cve-2026-108563-spreadsheet-formula-injection-in-conversion-tracking-report  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-108563 · Severity: medium · CVSS 4.7 · Published 2026-11-11

Revive Adserver is an open-source ad server that generates conversion-tracking reports. An unauthenticated attacker can inject malicious spreadsheet formulas into exported XLS reports by submitting crafted conversion values. When a user opens the exported report in a spreadsheet application, these formulas are executed, potentially allowing the attacker to extract sensitive data or compromise the user's system.

Technologies: [Revive Adserver](https://junglewise.ai/threats/technologies/revive-adserver-1). Vendors: [Revive](https://junglewise.ai/threats/vendors/revive).

## Quick answers

**Is CVE-2026-108563 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108563 being exploited in the wild.

**How severe is CVE-2026-108563?** Medium severity, with a CVSS score of 4.7, published 11 November 2026.

**Which products and versions are affected?** Revive Adserver 6.0.8 and earlier.

**Is there a fix for CVE-2026-108563?** Yes: fixed in Revive Adserver 6.0.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-108563 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-108563?** Check whether you run Revive Adserver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Revive Adserver 6.0.9

## Technical details

Spreadsheet formula injection (CSV injection) vulnerability in conversion-tracking report export functionality. Untrusted conversion values are written directly as formulas into XLS workbook cells without sanitization. An unauthenticated attacker can submit conversion values containing formula syntax (e.g., starting with =, +, -, @); when the report is opened in a spreadsheet application, the formulas execute with the privileges of the user opening the file.

## Affected products

- Revive Adserver 6.0.8 and earlier

## Timeline

- 2026-11-11: disclosed

## References

- [https://hackerone.com/reports/3859000](https://hackerone.com/reports/3859000)

## Related threats

- [Revive Adserver authorization bypass in channel-edit.php](https://junglewise.ai/threats/cve-2026-82978-an-authorization-bypass-in-channel-edit-php-in-revive-adserver-6)
- [Revive Adserver CSRF in tracker modification](https://junglewise.ai/threats/cve-2026-77168-a-cross-site-request-forgery-vulnerability-in-tracker-invocation)
- [Revive Adserver authorization bypass in campaign-zone linking](https://junglewise.ai/threats/cve-2026-68486-an-authorization-bypass-in-campaign-zone-linking-in-revive)
- [Revive Adserver authorization bypass in website listing](https://junglewise.ai/threats/cve-2026-68485-an-authorization-bypass-in-website-index-php-in-revive-adserver-6)
- [Revive Adserver reflected cross-site scripting in popup options](https://junglewise.ai/threats/cve-2026-108565-a-reflected-cross-site-scripting-vulnerability-in-the-popup)