VulnSocial

CVE-2026-25237Disclosure(pear / pearweb)

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

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.

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1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-624

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • pearweb

Threat summary

  • Public PoC is present in monitored signal
  • 1 mentions across 1 observed day

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
pear
Products
pearweb

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-02-04: 1PoC Mentioned / Linked · 2026-02-04: 1Technical Details · 2026-02-04: 102-04
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • 0day Signal@0dayPublishing
    Disclosure

    🚨 CVE-2026-25237: PEAR is Vulnerable to PHP Code E... Classic preg_replace /e modifier strikes again - trivial RCE via bug email processing in PEAR < 1.33.0 with no user int... https://zerodaysignal.com/vulnerability/CVE-2026-25237 #netsec #vulnerability #CVE #sysadmin #zeroday

    Post summary

    The tweet announces CVE-2026-25237, a trivial remote code execution flaw in PEAR caused by the preg_replace /e modifier, and links to a vulnerability article.

    0000057
    132 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppearpearweb---

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