CVE-2021-39303Public exploitNetwork attack vector

Authenticated internal resource disclosure via image URL SSRF

Published Nov 12, 2021 · Updated Aug 4, 2024

SSRF in Jamf Pro Server before 10.32.0 allows remote authenticated users to read internal HTTP resources via a crafted image URL. The education feature test handler passes its imageUrl parameter to HTTPUtils, which fetches the supplied URL and returns the full response as Base64. A valid Jamf Pro session is required; in Jamf Cloud, the request can reach the AWS metadata service and disclose temporary cloud credentials.

CVSS severity9.8
Critical
EPSS probability1.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Jamf Pro Server before 10.32.0 allows remote authenticated users to read internal HTTP resources via a crafted image URL. The education feature test handler passes its imageUrl parameter to HTTPUtils, which fetches the supplied URL and returns the full response as Base64. A valid Jamf Pro session is required; in Jamf Cloud, the request can reach the AWS metadata service and disclose temporary cloud credentials.

The record

CVE
CVE-2021-39303
Published
Nov 12, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 12, 2021CVE 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

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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