CVE-2026-49286Public exploitNetwork attack vector

Remote code execution via case-altered PHAR wrapper

Published Jun 19, 2026 · Updated Jun 19, 2026

PHAR deserialization in Pontedilana PhpWeasyPrint before 2.6.0 allows remote attackers to execute code through a crafted output filename. In prepareOutput(), a case-sensitive phar:// blacklist lets case-altered wrapper names reach file_exists(), which deserializes PHAR metadata on PHP 7. Exploitation requires control of the output filename, a planted crafted PHAR archive, and a server running PHP before 8; successful gadget execution runs code as the PHP process.

CVSS severity8.1
High
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHAR deserialization in Pontedilana PhpWeasyPrint before 2.6.0 allows remote attackers to execute code through a crafted output filename. In prepareOutput(), a case-sensitive phar:// blacklist lets case-altered wrapper names reach file_exists(), which deserializes PHAR metadata on PHP 7. Exploitation requires control of the output filename, a planted crafted PHAR archive, and a server running PHP before 8; successful gadget execution runs code as the PHP process.

The record

CVE
CVE-2026-49286
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
Pontedilana
Product
PhpWeasyPrint
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pontedilana · PhpWeasyPrintversion=< 2.6.0

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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