October 20, 2026

CVE Watchtower

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CVE-2026-7258NVD

Vulnerability Summary

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.
Severity Level
UNKNOWN
Published Date
May 10, 2026
Last Modified
May 11, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.03%Probability
Root Weakness (CWE)
CWE-125: Out-of-bounds Read ↗
The software reads data past the end, or before the beginning, of the intended buffer.
CVSS v4.0 Base Metrics — Score 6.3 (MEDIUM)
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsPresent
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)None
Integrity (Vulnerable System)None
Availability (Vulnerable System)Low
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)Low

Affected & Patched Versions

Affected Versions
  • PHP Group PHP >= 8.2.* and < 8.2.31
  • PHP Group PHP >= 8.3.* and < 8.3.31
  • PHP Group PHP >= 8.4.* and < 8.4.21
  • PHP Group PHP >= 8.5.* and < 8.5.6
Patched Versions
  • PHP Group PHP 8.2.31
  • PHP Group PHP 8.3.31
  • PHP Group PHP 8.4.21
  • PHP Group PHP 8.5.6
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References