CVE-2023-49819 | WordPress Structured Content Plugin <= 1.5.3 is vulnerable to PHP Object Injection

Deserialization of Untrusted Data vulnerability in Gordon Böhme, Antonio Leutsch Structured Content (JSON-LD) #wpsc.This issue affects Structured Content (JSON-LD) #wpsc: from n/a through 1.5.3.

Published: 2023-12-19 Last update: 2026-04-28 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2023-49819 is rated Moderate Risk (47.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.75%). Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-49819

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.32% 0.75% +0.43%
2 2025-11-21 0.66% 0.32% -0.34%
3 2025-11-18 0.66%

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-49819

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
1.6 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-49819

GitHub Security Advisory for CVE-2023-49819

GHSA-69m4-r76x-j23h · Severity: high — Deserialization of Untrusted Data vulnerability in Gordon Böhme, Antonio Leutsch Structured...

Affected software / configurations for CVE-2023-49819

Vendor Product Version Raw CPE
wpsc-plugin structured_content <= 1.5.3 cpe:2.3:a:wpsc-plugin:structured_content:*:*:*:*:*:wordpress:*:*

References for CVE-2023-49819

cvelogic Threat Intelligence