CVE-2021-40711
Adobe Experience Manager Stored Cross-Site Scripting Could Lead to Arbitrary Code Execution
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve arbitrary code execution. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Adobe Experience Manager Stored Cross-Site Scripting Could Lead to Arbitrary Code Execution
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve arbitrary code execution. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
- Record
CVE-2021-40711- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-27877
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve arbitrary code execution. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
- Record
EUVD-2021-27877- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xh8q-wvvw-q9w3No score
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability...
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve server-side denial of service. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
- Record
GHSA-xh8q-wvvw-q9w3- Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a stored XSS vulnerability when creating Content Fragments. An authenticated attacker can send a malformed POST request to achieve arbitrary code execution. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
- Record
CVE-2021-40711- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40711 is a medium vulnerability (CVSS 5.4) in Adobe Experience Manager, published September 27, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.49%, the 74th percentile. No source names a fixed version.