CVE-2023-46502

XXE in Opencrx 5.2.2

XXE SSRF

Published

30 October 2023

Modified

21 November 2024

Patch / advisory

View advisory

CVSS Score v3.1 9.8

Click a component to see what it means

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0072 53th percentile

Risk Priority 73 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-46502 is a critical-severity Improper Restriction of XML External Entity Reference (CWE-611) vulnerability in Opencrx Opencrx. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 47% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2023-2792

Vulnerability Data

An issue in openCRX v.5.2.2 allows a remote attacker to read internal files and execute server side request forgery attack via insecure DocumentBuilderFactory.

CWE(s): CWE-611 CWE-918

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control

Adversaries may obfuscate command and control traffic to make it more difficult to detect.

attack.mitre.org →

T1003 OS Credential Dumping Credential Access

Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.

attack.mitre.org →

T1003.001 LSASS Memory Credential Access

Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).

attack.mitre.org →

T1003.005 Cached Domain Credentials Credential Access

Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.

attack.mitre.org →

T1003.006 DCSync Credential Access

Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…

attack.mitre.org →

T1003.007 Proc Filesystem Credential Access

Adversaries may gather credentials from the proc filesystem or `/proc`.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-40809Same product: Opencrx Opencrx

CVE-2023-40812Same product: Opencrx Opencrx

CVE-2023-40816Same product: Opencrx Opencrx

CVE-2023-27151Same product: Opencrx Opencrx

CVE-2023-27150Same product: Opencrx Opencrx

CVE-2023-40817Same product: Opencrx Opencrx

CVE-2023-40815Same product: Opencrx Opencrx

CVE-2023-40814Same product: Opencrx Opencrx

CVE-2023-40810Same product: Opencrx Opencrx

CVE-2023-40813Same product: Opencrx Opencrx

Affected Assets

opencrx

5.2.2

Mitigating Controls

Control response

Prevent

Stop it (NIST 800-53)

—

Detect

Catch it (NIST detect / respond)

—

Harden

Shrink the surface (DISA STIG)

—

Validate

Prove the fix (OWASP ASVS)

V1.5.1
V15.3.2
V1.3.6
V1.5.3

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing

addresses: CWE-611 CWE-918

Penetration testing includes XML external entity payloads, detecting XXE vulnerabilities and enabling their mitigation.

SI-4 System Monitoring

addresses: CWE-611 CWE-918

Identifies XML external entity processing via monitoring of unusual file/network access or resource usage.

SC-7 Boundary Protection

addresses: CWE-918

Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.

SI-10 Information Input Validation

addresses: CWE-918

Validates server-side URLs and resource references to block SSRF attempts.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

DE.CM-09 partial match

blocks

Runtime monitoring of web applications and services can detect anomalous outbound requests indicative of SSRF.

ID.RA-01 partial match

blocks

Vulnerability scanning can discover XXE flaws but does not prevent their introduction in code.

PR.IR-01 partial match

blocks

Network segmentation and egress controls can limit the damage from successful SSRF requests.

PR.PS-01 partial match

blocks

Hardened XML parser configurations directly disable external entity resolution.

PR.PS-02 partial match

blocks

Patching eliminates XXE-vulnerable parser versions but is only one aspect of software maintenance.

PR.PS-06 partial match

blocks

Secure SDLC practices include input validation and safe XML parser configuration that prevent XXE.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.1 Policies for information security partial match

removes

A.5.14 Information transfer partial match

removes

A.5.15 Access control partial match

removes

A.5.16 Identity management partial match

removes

A.5.17 Authentication information partial match

removes

A.5.18 Access rights partial match

removes