Adyen APIs Library for Python timing attack vulnerability
Priority LOW 38CWE-347Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-347.
Summary
Adyen has utility methods for validating notification HMAC signatures. The `is_valid_hmac` and `is_valid_hmac_notification` methods are vulnerable to a timing attack, you should compare the hash of the HMACs instead.
Why it matters now
Fix Fixed Adyen (PyPI): 7.1.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Adyen (PyPI) | 2.2.0 to before 7.1.0 | 7.1.0 | Patch available | GHSA-f3q4-ggfp-jv34 |
- Adyen (PyPI) Vendor— Affected 2.2.0 to before 7.1.0 Fixed in 7.1.0 Patch available GHSA-f3q4-ggfp-jv34
Remediation
- Fix · GHSA-f3q4-ggfp-jv34 Adyen (PyPI) Fixed in 7.1.0 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-f3q4-ggfp-jv34
References
Other 5
- https://github.com/Adyen/adyen-python-api-library/issues/168
- https://github.com/Adyen/adyen-python-api-library/pull/170
- https://github.com/Adyen/adyen-python-api-library/commit/3292133dbc00ffc4cccfb92de672a76eaa587ca5
- https://github.com/Adyen/adyen-python-api-library
- https://github.com/pypa/advisory-database/tree/main/vulns/adyen/PYSEC-2023-1.yaml
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences