CVE-2023-6991Public exploitNetwork attack vector

Contributor-level SSRF via unvalidated shortcode URL

Published Jan 15, 2024 · Updated Jun 11, 2025

SSRF in JSM file_get_contents() Shortcode before 2.7.1 allows remote authenticated users to request internal URLs through wpfgc. The wpfgc shortcode passes its url attribute to a server-side request without wp_http_validate_url(), so private or loopback destinations are accepted. Contributor-level access is required; successful requests originate from the WordPress server and can read or modify data exposed by reachable internal services.

CVSS severity8.8
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in JSM file_get_contents() Shortcode before 2.7.1 allows remote authenticated users to request internal URLs through wpfgc. The wpfgc shortcode passes its url attribute to a server-side request without wp_http_validate_url(), so private or loopback destinations are accepted. Contributor-level access is required; successful requests originate from the WordPress server and can read or modify data exposed by reachable internal services.

The record

CVE
CVE-2023-6991
Published
Jan 15, 2024
Updated
Jun 11, 2025
Vendor
Surnia Ulula
Product
JSM file_get_contents() Shortcode
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2025Record 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=0 <2.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Surnia Ulula · JSM file_get_contents() Shortcodeversion=0 <2.7.1

Published CVSS scores

5.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
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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