CVE-2021-21009

Server-side request forgery (SSRF) in Campaign Classic could lead to sensitive information disclosure

HIGH

8.6

CVSS Score

Published: January 13, 2021 at 10:47 PM UTC

Updated: August 24, 2026 at 06:21 PM UTC

1 product affected across 1 vendorCampaign· also runs on 2 platforms

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Severity

HIGH8.6

Exploit prediction

EPSS 3%

SSVC

No known exploit

Description

Adobe Campaign Classic Gold Standard 10 (and earlier), 20.3.1 (and earlier), 20.2.3 (and earlier), 20.1.3 (and earlier), 19.2.3 (and earlier) and 19.1.7 (and earlier) are affected by a server-side request forgery (SSRF) vulnerability. Successful exploitation could allow an attacker to use the Campaign instance to issue unauthorized requests to internal or external resources.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Campaign · Adobe

95%

v ≤ 19.1.7 and earlierv ≤ 19.2.3 and earlierv ≤ 20.1.3 and earlierv ≤ 20.2.3 and earlierv ≤ 20.3.1 and earlierv ≤ Gold Standard 10 and earlierv < 19.1.819.2 ≤ v < 19.2.420.1 ≤ v < 20.1.420.2 ≤ v < 20.2.420.3 ≤ v < 20.3.3

Affected range stops below 19.1.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.2.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.1.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.2.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.3.3, so it looks safe — our inference, not a vendor statement

linux-linux-kernel (environment) · microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Linux Kernel · Linux

95%

Windows · Microsoft

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://helpx.adobe.com/security/products/campaign/apsb21-04.html

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://helpx.adobe.com/security/products/campaign/apsb21-04.html

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHadobe

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-918

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