CVE-2020-13484Public exploitNetwork attack vector

Internal network access via unchecked image metadata fetch

Published Jun 24, 2020 · Updated Aug 4, 2024

SSRF in Bitrix24 20.0.975 and earlier allows remote attackers to make server-side requests to intranet URLs through URLPreview. The Main core URLPreview parser fetches a supplied page, extracts its og:image URL, and sends a second request without rechecking that destination for local IP addresses. An unauthenticated session and generated CSRF token are sufficient, and the demonstrated consequence is access to internal HTTP endpoints reachable by the server.

CVSS severity9.8
Critical
EPSS probability2.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Bitrix24 20.0.975 and earlier allows remote attackers to make server-side requests to intranet URLs through URLPreview. The Main core URLPreview parser fetches a supplied page, extracts its og:image URL, and sends a second request without rechecking that destination for local IP addresses. An unauthenticated session and generated CSRF token are sufficient, and the demonstrated consequence is access to internal HTTP endpoints reachable by the server.

The record

CVE
CVE-2020-13484
Published
Jun 24, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 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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