# CVE-2026-62131: Zoho Flow PHP object injection vulnerability

Source: https://junglewise.ai/threats/cve-2026-62131-unauthenticated-php-object-injection-in-zoho-flow-2-14-5-versions  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-29. Updated: 2026-10-29  
License: CC BY 4.0 with a link back

CVE-2026-62131 · Severity: critical · CVSS 9.8 · Published 2026-10-29

Zoho Flow is a WordPress plugin that automates workflows and integrations. An unauthenticated attacker can inject malicious PHP objects to execute arbitrary code on the affected server, potentially compromising the entire website and its data. The vulnerability affects versions 2.14.5 and earlier with no official patch currently available.

Vendors: [Zoho](https://junglewise.ai/threats/vendors/zoho).

## Quick answers

**Is CVE-2026-62131 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-62131 being exploited in the wild.

**How severe is CVE-2026-62131?** Critical severity, with a CVSS score of 9.8, published 29 October 2026.

**Which products and versions are affected?** Zoho Flow <= 2.14.5.

**Is there a fix for CVE-2026-62131?** No fixed version is recorded yet. Apply the Patchstack mitigation rule to block exploit attempts until an official patch is available. If unable to update immediately, restrict plugin access via web application firewall rules or disable the plugin temporarily. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-62131 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-62131?** Check whether you run Zoho Flow 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


Apply the Patchstack mitigation rule to block exploit attempts until an official patch is available. If unable to update immediately, restrict plugin access via web application firewall rules or disable the plugin temporarily.

## Technical details

PHP object injection flaw in Zoho Flow allows unauthenticated attackers to manipulate data processing via crafted input, leading to arbitrary code execution on the server. The vulnerability requires no authentication or user interaction and can be exploited remotely over the network. The attack leverages unsafe deserialization of PHP objects to achieve remote code execution.

## Affected products

- Zoho Flow <= 2.14.5

## Timeline

- 2026-10-29: disclosed
- 2026-10-26: advisory: Patchstack security advisory published

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/zoho-flow/vulnerability/wordpress-zoho-flow-plugin-2-14-5-php-object-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/zoho-flow/vulnerability/wordpress-zoho-flow-plugin-2-14-5-php-object-injection-vulnerability?_s_id=cve)