Threats / North Grid / CVE-2023-45727
CVE-2023-45727
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
North Grid Proself vulnerability
North Grid Proself contains an improper restriction of XML External Entity (XXE) reference vulnerability allowing remote unauthenticated attackers to conduct XXE attacks.
Verdict
Today item — known-exploited.
A remote unauthenticated attacker can exploit improper XXE restrictions in Proself to read arbitrary files, conduct SSRF attacks, or cause denial of service. Active exploitation in the wild increases risk.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
3 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-03).
Probability (EPSS)
EPSS 0.03542 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: North Grid, Proself. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-611 XML External Entity (XXE) — weakness family: Web / client.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious XML payload with external entity references targeting the Proself application.
Business
Attackers gain ability to exploit the service without authentication, lowering barrier to entry.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I submit the XXE payload through Proself's XML processing endpoints to extract sensitive files or internal data.
Business
Confidential information including configuration files, credentials, or user data may be exposed.
3
Lateral reach — past segmentation narrative 3
Attacker
I leverage XXE to perform server-side request forgery (SSRF) attacks against internal network resources.
Business
Internal systems and services become accessible to external attackers, expanding attack surface.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05