Authentication Bypass Affecting libcurl-devel package, versions <0:7.76.1-40.el9_8.8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.69% (51st percentile)

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  • Snyk IDSNYK-ORACLE9-LIBCURLDEVEL-20884935
  • published13 Oct 2026
  • disclosed3 Jul 2026

Introduced: 3 Jul 2026

CVE-2026-11856  (opens in a new tab)
CWE-294  (opens in a new tab)

How to fix?

Upgrade Oracle:9 libcurl-devel to version 0:7.76.1-40.el9_8.8 or higher.
This issue was patched in ELSA-2026-80511.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl-devel package and not the libcurl-devel package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

Successfully using libcurl to do a transfer to a specific HTTP origin (hostA) with Digest authentication and then changing the origin to a different one (hostB) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Authorization: header field meant for hostA, to hostB.

CVSS Base Scores

version 3.1