🛡️ CVE-2026-54133 on Composer (Root.io) — jmespath.php

🔴 CVSS 9.5 — Critical ✅ No Known Exploit OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2026-54133 in mtdowling/jmespath.php - Patched by Root

Root has patched CVE-2026-54133 in the mtdowling/jmespath.php package for Root:Composer. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-54133 as tracked by Composer (Root.io), for the package jmespath.php. The fix is available in version 2.8.0-p12007001+aikido; earlier versions remain affected.

Affected software

ROOT-APP-COMPOSER-CVE-2026-54133 is recorded against 2 packages.

  • mtdowling/jmespath.php (fixed in 2.8.0-p12007001+aikido)
  • rootio-mtdowling/jmespath.php (fixed in 2.8.0-p12007001)

Timeline and source

Published on 1 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-01
Updated 2026-08-12
Modified 2026-07-01
Fix URL N/A

Affected Packages

Software From version Fixed in
mtdowling/jmespath.php 2.8.0-p12007001+aikido
rootio-mtdowling/jmespath.php 2.8.0-p12007001

References

N/A

Exploit Protection

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ROOT-APP-COMPOSER-CVE-2026-54133 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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