Is CVE-2011-1839 being actively exploited?

CVE-2011-1839 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1839?

CVE-2011-1839 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2011-1839

MEDIUM · CVSS 5.0EPSS 1.1%EU EUVD

IBM Rational Build Forge 7.1.0 uses the HTTP GET method during redirection from the authentication servlet to a PHP script, which makes it easier for context-dependent attackers to discover session IDs by reading (1) web-server access logs, (2) web-server Referer logs, or (3) the browser history.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness (CWE): CWE-200
EPSS score: 1.1% (66th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1837)
Published: April 28, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-1837 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

ibm / rational build forge

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain