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Vulnerability record · CVE-2021-31380 · published 19 October 2021

CVE-2021-31380: Juniper session and resource control information exposure vulnerability

Juniper · Session And Resource Control

A configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to cause the web server to disclose sensitive information in the HTTP response which allows the attacker to obtain sensitive information.

5.3 CVSS 3.1 Medium EPSS 1.1% · top 34.8% CWE-16 · CWE-16CWE-200 · Information exposure
5.3CVSS 3.1 base score, v2 5.0
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to cause the web server to disclose sensitive information in the HTTP response which allows the attacker to obtain sensitive information.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.juniper.net/JSA11248 PatchVendor Advisory
https://kb.juniper.net/JSA11248 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-0960SNMPv3 HMAC verification flaw allows authentication bypassSNMPv3 HMAC verification in multiple products relies on the client to specify the HMAC length, so an attacker can send a length value of 1 and have o…EPSS 69%analysed9.1CVE-2021-31381Juniper session and resource control information exposure vulnerabilityA configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a special…EPSS 1.2%5.3CVE-2021-31352Juniper session and resource control information exposure vulnerabilityAn Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers,…EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2021-31380), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.