CVE-2026-39865: Axios HTTP/2 Session Cleanup State Corruption Vulnerability

April 8, 2026 (updated April 27, 2026)

Axios HTTP/2 session cleanup logic contains a state corruption bug that allows a malicious server to crash the client process through concurrent session closures. This denial-of-service vulnerability affects axios versions prior to 1.13.2 when HTTP/2 is enabled.

References

github.com/advisories/GHSA-qj83-cq47-w5f8
github.com/axios/axios
github.com/axios/axios/commit/0588880ac7ddba7594ef179930493884b7e90bf5
github.com/axios/axios/releases/tag/v1.13.2
github.com/axios/axios/security/advisories/GHSA-qj83-cq47-w5f8
nvd.nist.gov/vuln/detail/CVE-2026-39865

Code Behaviors & Features

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