Is CVE-2026-3783 actively exploited?

No active exploitation of CVE-2026-3783 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3783 be exploited remotely?

Yes. CVE-2026-3783 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3783?

CVE-2026-3783 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-3783

Published: March 11, 2026· Updated: Mar 12, 2026

5.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.5th

Official Description

When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer

performs a redirect to a second URL, curl could leak that token to the second

hostname under some circumstances.

If the hostname that the first request is redirected to has information in the

used .netrc file, with either of the `machine` or `default` keywords, curl

would pass on the bearer token set for the first host also to the second one.

NVD Source

Technical Analysis

CVE-2026-3783 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.