Emlog 2.5.23 Resource Media Library cross site scripting
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.4 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Emlog 2.5.23. It has been rated as problematic. Affected is an unknown function of the component Resource Media Library. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-21431. The attack is possible to be carried out remotely. No exploit exists.
Details
A vulnerability, which was classified as problematic, has been found in Emlog 2.5.23. This issue affects an unknown function of the component Resource Media Library. The manipulation 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. The summary by CVE is:
Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability in the `Resource media library ` function while publishing an article. As of time of publication, no known patched versions are available.
The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-21431 since 12/29/2025. 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. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Product
Name
Version
Website
- Product: https://github.com/emlog/emlog/
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: 4.4VulDB Meta Temp Score: 4.4
VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 5.4
NVD Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
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
12/29/2025 CVE reserved01/02/2026 Advisory disclosed
01/02/2026 VulDB entry created
01/16/2026 VulDB entry last update
Sources
Product: github.comAdvisory: GHSA-9vc2-crhr-248x
Status: Confirmed
CVE: CVE-2026-21431 (🔒)
GCVE (CVE): GCVE-0-2026-21431
GCVE (VulDB): GCVE-100-339437
Entry
Created: 01/02/2026 21:21Updated: 01/16/2026 19:42
Changes: 01/02/2026 21:21 (65), 01/03/2026 06:51 (1), 01/16/2026 19:42 (11)
Complete: 🔍
Cache ID: 216::103
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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