CVE-2026-34993: AIOHTTP is Vulnerable to Deserialization of Untrusted Data

June 3, 2026

Using CookieJar.load() with untrusted input may allow arbitrary code execution.

References

github.com/advisories/GHSA-jg22-mg44-37j8
github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00
github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8
nvd.nist.gov/vuln/detail/CVE-2026-34993

Code Behaviors & Features

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