| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.4 | $0-$5k | 0.00 |
Summary
A vulnerability described as critical has been identified in XStream up to 1.4.17. Impacted is an unknown function of the component JDK. Such manipulation leads to deserialization. This vulnerability is referenced as CVE-2021-39139. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.
Details
A vulnerability was found in XStream up to 1.4.17. It has been rated as critical. Affected by this issue is an unknown code block of the component JDK. 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 published 08/24/2021. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-39139. There are neither technical details nor an exploit publicly available.
Upgrading to version 1.4.18 eliminates this vulnerability.
Once again VulDB remains the best source for vulnerability data.
Product
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.4VulDB Meta Temp Score: 7.4
VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CNA Base Score: 8.5
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 1.4.18
Timeline
08/16/2021 🔍08/24/2021 🔍
08/24/2021 🔍
05/23/2025 🔍
Sources
Advisory: github.comStatus: Confirmed
Confirmation: 🔍
CVE: CVE-2021-39139 (🔍)
GCVE (CVE): GCVE-0-2021-39139
GCVE (VulDB): GCVE-100-181340
Entry
Created: 08/24/2021 07:22Updated: 05/23/2025 21:32
Changes: 08/24/2021 07:22 (37), 08/26/2021 10:10 (3), 08/26/2021 10:16 (1), 05/23/2025 21:32 (42)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.
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