PEAR is a framework and distribution system for reusable PHP components. Prior to version 1.33.0, use of preg_replace() with the /e modifier in bug update email handling can enable PHP code execution if attacker-controlled content reaches the evaluated replacement. This issue has been patched in version 1.33.0.
CVE-2026-25237
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- 59(Track)EG Risk 59/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation0% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 32.1%
- KEV
- Not listed
Published
February 3, 2026
Last Modified
February 5, 2026
Advisory Details (1)
Auto-updated Jun 8, 2026PHP Code Execution via preg_replace /e in Bug Update Emails · Advisory · pear/pearweb · GitHub
https://github.com/pear/pearweb/security/advisories/GHSA-vhw6-hqh9-8r23Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 52× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 03:07 UTCEG score recompute
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Frequently asked(5)
What is CVE-2026-25237?
When was CVE-2026-25237 disclosed?
Is CVE-2026-25237 actively exploited?
What is the CVSS score of CVE-2026-25237?
How do I remediate CVE-2026-25237?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-25237
Is Your Infrastructure Affected by CVE-2026-25237?
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