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Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package curl.src  (opens in a new tab)

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EPSS
0.04% (14th percentile)

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  • Snyk IDSNYK-CENTOS10-CURLSRC-14923367
  • published14 Jan 2026
  • disclosed12 Sept 2025
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Introduced: 12 Sep 2025

CVE-2025-9086  (opens in a new tab)
CWE-125  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl.src package and not the curl.src package as distributed by Centos.

  1. A cookie is set using the secure keyword for https://target
  2. curl is redirected to or otherwise made to speak with http://target (same hostname, but using clear text HTTP) using the same cookie set
  3. The same cookie name is set - but with just a slash as path (path=\"/\",). Since this site is not secure, the cookie should just be ignored.
  4. A bug in the path comparison logic makes curl read outside a heap buffer boundary

The bug either causes a crash or it potentially makes the comparison come to the wrong conclusion and lets the clear-text site override the contents of the secure cookie, contrary to expectations and depending on the memory contents immediately following the single-byte allocation that holds the path.

The presumed and correct behavior would be to plainly ignore the second set of the cookie since it was already set as secure on a secure host so overriding it on an insecure host should not be okay.