How to fix aria valid attr value on WooCommerce

Steps for WooCommerce

1. In WordPress admin, go to Appearance → Theme File Editor (or use a child theme and a code editor like VS Code via FTP/SFTP).
2. Search your active theme's template files (especially woocommerce/ overrides in your child theme, header.php, footer.php, and any custom page builders' output) for ARIA attributes.
3. Correct any ID-reference mismatches or invalid keyword values directly in the template PHP/HTML files.
4. If the issue is in a plugin's output (e.g., a slider or modal plugin), check the plugin's settings for ARIA options; if none exist, open a support ticket with the plugin author or override their template in your child theme.
5. Install the free axe DevTools browser extension, load the affected page, run the scan, and confirm all aria-valid-attr-value violations are gone.
6. Flush any caching plugin (e.g., WP Super Cache, W3 Total Cache) after saving so the updated markup is served.

<!-- WRONG: aria-labelledby points to an ID that doesn't exist -->
<button aria-labelledby="prodcut-title">Add to Cart</button>

<!-- WRONG: aria-live has an invalid value -->
<div aria-live="yes">Updating cart…</div>

<!-- CORRECT: aria-labelledby matches a real element ID exactly -->
<h1 id="product-title">Blue Wool Scarf</h1>
<button aria-labelledby="product-title">Add to Cart</button>

<!-- CORRECT: aria-live uses an allowed keyword -->
<div aria-live="polite">Updating cart…</div>

<!-- CORRECT: aria-describedby references an existing element -->
<input type="email" id="email" aria-describedby="email-hint" />
<span id="email-hint">We'll never share your email.</span>

What is aria valid attr value?

ARIA (Accessible Rich Internet Applications) attributes are special HTML attributes — like `aria-labelledby`, `aria-describedby`, `aria-controls`, and `aria-activedescendant` — that give screen readers and other assistive technologies extra information about how elements on a page work and relate to each other. Many of these attributes must contain a valid value to be meaningful: for example, `aria-labelledby="product-title"` only works if an element with the id `product-title` actually exists in the page. When an ARIA attribute is given an invalid value — a misspelled ID, a blank string, a value that doesn't exist, or a value that's not in the allowed list for that attribute — the browser and screen reader can't use it, making that element confusing or invisible to users who rely on assistive technology. WCAG Success Criterion 4.1.2 requires that all user interface components have programmatically determinable names, roles, and values — and broken ARIA values directly violate this requirement.

Screen reader users — including many people with visual, motor, or cognitive disabilities — depend entirely on correctly coded ARIA to understand interactive components like modals, dropdowns, carousels, tabs, and forms. A broken `aria-labelledby` value, for example, means a blind shopper hears nothing when their screen reader focuses on your "Add to Cart" button or product image. Beyond the direct user impact, WCAG 4.1.2 is a Level A requirement — the baseline — so violations expose your store to accessibility complaints and legal risk in jurisdictions like the US (ADA), UK (Equality Act), and EU (European Accessibility Act). Google also uses accessibility signals as part of overall page-quality evaluation, so a more accessible, error-free store can benefit organic rankings over time. Fixing invalid ARIA values is a targeted, low-cost change that directly improves the experience for millions of assistive-technology users worldwide.

See the complete Aria valid attr value guide for every platform and the full background.