PT-2026-113738 · Git · Curl

CVE-2026-86409

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Published

2026-10-14

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Updated

2026-10-14

None

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Name of the Vulnerable Software and Affected Versions curl (affected versions not specified)
Description Setting CURLOPT AWS SIGV4 to NULL fails to disable SigV4 authentication as expected and documented. Consequently, a subsequent transfer using the same handle continues to send the Authorization: AWS4-HMAC-SHA256 header to the next specified URL, which leads to the leakage of state information.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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Weakness Enumeration

Related Identifiers

CVE-2026-86409

Affected Products

Curl