| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.6 | $0-$5k | 0.00 |
Summary
A vulnerability was found in XStream up to 1.4.15. It has been rated as critical. The impacted element is an unknown function. The manipulation leads to deserialization. This vulnerability is listed as CVE-2021-21344. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.
Details
A vulnerability was found in XStream up to 1.4.15 and classified as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability.
The weakness was presented 03/23/2021. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2021-21344. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.
Upgrading to version 1.4.16 eliminates this vulnerability. The upgrade is hosted for download at x-stream.github.io.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Product
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.7VulDB Meta Temp Score: 6.6
VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CNA Base Score: 5.3
CNA Vector (GitHub, Inc.): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: DeserializationCWE: CWE-502 / CWE-20
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: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: XStream 1.4.16
Timeline
12/22/2020 🔍03/23/2021 🔍
03/23/2021 🔍
05/23/2025 🔍
Sources
Advisory: github.comStatus: Confirmed
Confirmation: 🔍
CVE: CVE-2021-21344 (🔍)
GCVE (CVE): GCVE-0-2021-21344
GCVE (VulDB): GCVE-100-171563
Entry
Created: 03/23/2021 07:47Updated: 05/23/2025 20:33
Changes: 03/23/2021 07:47 (38), 04/03/2021 19:48 (5), 04/03/2021 19:53 (19), 05/23/2025 20:33 (26)
Complete: 🔍
Cache ID: 216::103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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