CVE-2026-86409 Affecting wcurl package, versions <8.22.0-150600.4.58.1


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
1.1% (66th percentile)

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  • Snyk IDSNYK-SLES156-WCURL-22192297
  • published4 Nov 2026
  • disclosed3 Nov 2026

Introduced: 3 Nov 2026

NewCVE-2026-86409  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 wcurl to version 8.22.0-150600.4.58.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wcurl package and not the wcurl package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1