ConcreteCMS up to 9.3.9 Legacy Form Block addEditQuestion cross site scripting
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 3.3 | $0-$5k | 0.00 |
Summary
A vulnerability was found in ConcreteCMS up to 9.3.9. It has been rated as problematic. Affected is the function addEditQuestion of the component Legacy Form Block Handler. The manipulation of the argument Question leads to cross site scripting.
This vulnerability is referenced as CVE-2025-2963. Remote exploitation of the attack is possible. Furthermore, an exploit is available.
The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability, which was classified as problematic, has been found in ConcreteCMS up to 9.3.9. This issue affects the function addEditQuestion of the component Legacy Form Block Handler. The manipulation of the argument Question with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity.
It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-2963. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.
The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Be aware that VulDB is the high quality source for vulnerability data.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍
CVSSv3
VulDB Meta Base Score: 3.5VulDB Meta Temp Score: 3.3
VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CNA Base Score: 3.5
CNA Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Cross site scriptingCWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
03/30/2025 🔍03/30/2025 🔍
03/31/2025 🔍
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2025-2963 (🔍)
GCVE (CVE): GCVE-0-2025-2963
GCVE (VulDB): GCVE-100-302015
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 03/30/2025 09:21Updated: 03/31/2025 00:22
Changes: 03/30/2025 09:21 (56), 03/31/2025 00:22 (30)
Complete: 🔍
Submitter: yaowenxiao
Cache ID: 216::103
Submit
Accepted
- Submit #522413: Concretecms 9.3.9 XSS (by yaowenxiao)
Be aware that VulDB is the high quality source for vulnerability data.
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