CVE-2021-39140

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

5.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 92.6% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-08-23 18:15Z5 YR AGO

Last updated

2024-08-04 01:58Z2 YR AGO

Reserved

2021-08-16

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-502Deserialization of Untrusted DataBase
• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.1

Document digest

2d85287c0f5caf9a3aca97a9b0c19ba0597e9d25f067f59a571934b778eacbaf

• github.comhttps://github.com/x-stream/xstream/security/advisories/GHSA-6wf9-jmg9-vxccx_refsource_CONFIRM
• x-stream.github.iohttps://x-stream.github.io/CVE-2021-39140.htmlx_refsource_MISC
• lists.debian.org[debian-lts-announce] 20210929 [SECURITY] [DLA 2769-1] libxstream-java security updatehttps://lists.debian.org/debian-lts-announce/2021/09/msg00017.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-fbad11014ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-d894ca87dchttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-5e376c0ed9https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/vendor-advisoryx_refsource_FEDORA
• www.debian.orgDSA-5004https://www.debian.org/security/2021/dsa-5004vendor-advisoryx_refsource_DEBIAN
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.htmlx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210923-0003/x_refsource_CONFIRM
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlx_refsource_MISC
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC