CVE-2021-29267
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api...
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api/Files/Attachment URI to attack help-desk staff via the chatbot feature.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api/Files/Attachment URI to attack help-desk staff via the chatbot feature.
- Record
CVE-2021-29267- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api/Files/Attachment URI to attack help-desk staff via the chatbot feature.
- Record
CVE-2021-29267- Updated
- 2026-11-02
EUVDEUVD-2021-15905 No score
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api/Files/Attachment URI to attack help-desk staff via the chatbot feature.
- Record
EUVD-2021-15905- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w2xw-7qr5-2f7j
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api...
Sherlock SherlockIM through 2021-03-29 allows Cross Site Scripting (XSS) by leveraging the api/Files/Attachment URI to attack help-desk staff via the chatbot feature.
- Record
GHSA-w2xw-7qr5-2f7j- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Security-AVS/CVE-2021-29267 | 2021-03-29 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-29267 is a medium vulnerability (CVSS 6.1) in Sherlockim, published March 29, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. No source names a fixed version.