UNKNOWN NVD

CVE-2026-86409

Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent transfer on the same han

Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent transfer on the same handle still sends an `Authorization: AWS4-HMAC-SHA256` header to whatever URL isset next, leaking state information.

Remediation

$ sudo apt install --only-upgrade curl

References

Published: 2026-10-20 · Source: NVD · Feed updated: 2026-10-20
This unknown severity vulnerability was published on 2026-10-20 via NVD. A remediation command is available below.
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