CVE-2023-49773Network attack vector

PHP object injection via unauthenticated crafted input

Published Dec 20, 2023 · Updated Apr 28, 2026

PHP object injection in Tim Brattberg BCorp Shortcodes 0.23 and earlier allows remote attackers to inject objects via crafted input. Public advisories do not identify the affected function, request parameter, or deserialization call that accepts the untrusted data. Exploitation requires no authentication, but code execution, SQL injection, path traversal, or service interruption depends on a suitable POP chain.

CVSS severity10.0
Critical
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in Tim Brattberg BCorp Shortcodes 0.23 and earlier allows remote attackers to inject objects via crafted input. Public advisories do not identify the affected function, request parameter, or deserialization call that accepts the untrusted data. Exploitation requires no authentication, but code execution, SQL injection, path traversal, or service interruption depends on a suitable POP chain.

The record

CVE
CVE-2023-49773
Published
Dec 20, 2023
Updated
Apr 28, 2026
Vendor
Tim Brattberg
Product
BCorp Shortcodes
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=0.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tim Brattberg · BCorp Shortcodesversion=n/a <=0.23

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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