Vulnerability Description
Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service when an application requests content from an untrusted server, or follows a redirect to one, because a malicious response containing an excessive number of chained `Content-Encoding` values causes Zapros to construct a deeply nested decompression chain that consumes excessive resources. Version 0.14.0 patches the vulnerability by limiting responses to five content-encoding layers and raising `DecodingError` when that limit is exceeded. As a workaround, applications can add response middleware that inspects the `Content-Encoding` header and rejects responses containing more than a safe number of encoding layers.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-61541?
CVE-2026-61541 is a documented vulnerability. Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service when an application requests content from an untrusted server, or follows a redirect to one, because a maliciou...
How severe is CVE-2026-61541?
CVSS scoring is not yet available for CVE-2026-61541. Check NVD for updates.
Is there a patch for CVE-2026-61541?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.