Description
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.
Published: 2026-05-10
Score: 6.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4586-1 php7.4 security update
Debian DSA Debian DSA DSA-6255-1 php8.2 security update
Debian DSA Debian DSA DSA-6256-1 php8.4 security update
History

Sat, 16 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-839
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 12 May 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Php
Php php
CPEs cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Vendors & Products Php
Php php
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Mon, 11 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 10 May 2026 05:45:00 +0000

Type Values Removed Values Added
First Time appeared Php Group
Php Group php
Vendors & Products Php Group
Php Group php

Sun, 10 May 2026 04:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Out-of-bounds read in urldecode() on NetBSD
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/U:Amber'}


cve-icon MITRE

Status: PUBLISHED

Assigner: php

Published:

Updated: 2026-05-11T13:06:10.908Z

Reserved: 2026-04-28T04:58:17.457Z

Link: CVE-2026-7258

cve-icon Vulnrichment

Updated: 2026-05-11T13:06:07.848Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-10T05:16:11.360

Modified: 2026-05-12T17:41:43.347

Link: CVE-2026-7258

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-05-10T04:28:14Z

Links: CVE-2026-7258 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-10T05:30:05Z

Weaknesses