Bug 2468561 (CVE-2026-7258) - CVE-2026-7258 PHP: PHP: Denial of Service via improper handling of signed characters in ctype functions
Summary: CVE-2026-7258 PHP: PHP: Denial of Service via improper handling of signed cha...
Keywords:
Status: NEW
Alias: CVE-2026-7258
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-10 05:01 UTC by OSIDB Bzimport
Modified: 2026-07-01 16:50 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:22142 0 None None None 2026-06-01 03:05:45 UTC
Red Hat Product Errata RHSA-2026:22143 0 None None None 2026-06-01 02:47:15 UTC
Red Hat Product Errata RHSA-2026:22305 0 None None None 2026-06-01 10:53:47 UTC
Red Hat Product Errata RHSA-2026:22649 0 None None None 2026-06-02 22:07:58 UTC
Red Hat Product Errata RHSA-2026:23388 0 None None None 2026-06-04 15:53:46 UTC
Red Hat Product Errata RHSA-2026:33449 0 None None None 2026-06-30 10:46:07 UTC
Red Hat Product Errata RHSA-2026:34354 0 None None None 2026-07-01 16:49:59 UTC

Description OSIDB Bzimport 2026-05-10 05:01:11 UTC 
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lookup ctype functions - such as NetBSD - this can lead to accessing array with negative offset, which can trigger a denial of service.
Comment 2 errata-xmlrpc 2026-06-01 02:47:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:22143 https://access.redhat.com/errata/RHSA-2026:22143
Comment 3 errata-xmlrpc 2026-06-01 03:05:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:22142 https://access.redhat.com/errata/RHSA-2026:22142
Comment 4 errata-xmlrpc 2026-06-01 10:53:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:22305 https://access.redhat.com/errata/RHSA-2026:22305
Comment 5 errata-xmlrpc 2026-06-02 22:07:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:22649 https://access.redhat.com/errata/RHSA-2026:22649
Comment 6 errata-xmlrpc 2026-06-04 15:53:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:23388 https://access.redhat.com/errata/RHSA-2026:23388
Comment 7 errata-xmlrpc 2026-06-30 10:46:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:33449 https://access.redhat.com/errata/RHSA-2026:33449
Comment 8 errata-xmlrpc 2026-07-01 16:49:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:34354 https://access.redhat.com/errata/RHSA-2026:34354
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