Magento 2 REST API Issue: Unable to Handle Product SKU with Slash Value in stockItems Endpoint

[mohammadbharmal]

Preconditions and environment

• Magento 2.4.6-p1

Magento 2 REST API Endpoint /V1/stockItems/:productSku is encountering a bug specifically when using OAuth 1.0 authentication. The issue arises when the product SKU contains special characters such as slashes (/) or ampersands (&). This results in an incorrect OAuth signature being generated, leading to errors in the authentication process.

The error is being triggered from the class Magento\Framework\Oauth\Oauth::_validateSignature() at line number 207. The root cause of the problem lies in the signature generation process, which is performed by the Laminas library. The library generates different signatures for SKUs containing slashes or ampersands, causing inconsistencies in the authentication flow.

Example:
Working URL: https://test.com/test-sku
Not Working URL: https://test.com/test-sku%2F123

The correct OAuth signature generation for the product SKU is not taking into account the special characters, leading to an incorrect signature that fails the authentication process.

To fix this issue, adjustments need to be made in the OAuth signature generation logic, ensuring that it properly handles SKUs with special characters and produces consistent signatures for all SKU variations.

Please see below screenshot for more reference.

Steps to reproduce

1. Login to Magento admin.
2. Navigate to System > Extensions > Integrations > Add New Integration.
3. Activate Added Integration from the Integration grid with all rights.
4. Go to the Catalog > Product.
5. Add or edit product.
6. Keep sku name "demo-test/1234" or demo-test&1234
7. Save product.
8. Go to Postman
9. Set Get Request with endpoint rest/V1/stockItems ex:- https://your-domain/index.php/rest/V1/stockItems/demo-test%2F1234
10. Set Oauth 1.0
11. Set Add authorization data to Request Headers.
12. Set Integration details in the OAuth request like consumer key, Access Token etc etc.
13. Send request

Expected result

Should be return stock data of the sku

Actual result

returning error "The signature is invalid. Verify and try again."

Additional information

I have tested this with an postman

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @mohammadbharmal. Thank you for your report.
To speed up processing of this issue, make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, Add a comment to the issue:

• @magento give me 2.4-develop instance - upcoming 2.4.x release
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[mohammadbharmal]

@magento I am working on this

[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
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[mohammadbharmal]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @mohammadbharmal. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @mohammadbharmal, here is your Magento Instance: https://94a8c4219b018f25698d274a8f585b17.instances-prod.magento-community.engineering
Admin access: https://94a8c4219b018f25698d274a8f585b17.instances-prod.magento-community.engineering/admin_8055
Login: addfe0f6
Password: 1faf6919087a

[mohammadbharmal]

I have generated tried to generate same case on the develop instance.

it's returning normal sku data, but not working with slash or ampersands.

Issue has been generated.

SKU :- this-teste&787

URL:- https://94a8c4219b018f25698d274a8f585b17.instances-prod.magento-community.engineering/rest/V1/stockItems/this-teste%26787

[mohammadbharmal]

@engcom-Bravo , have you checked this issue ?

[engcom-Bravo]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @engcom-Bravo. Thank you for your request. I'm working on Magento instance for you.