How severe is CVE-2011-1839?

CVE-2011-1839 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-1839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1839?

CVE-2011-1839 affects Ibm Rational Build Forge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-1839?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1839 published?

CVE-2011-1839 was published on 2011-04-28 and last updated on 2026-06-16.

CVE-2011-1839

CVE-2011-1839 is a medium-severity vulnerability in Ibm Rational Build Forge with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Ibm Rational Build Forge
Published: 2011-04-28
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2011-1839?: 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.
How severe is CVE-2011-1839?: CVE-2011-1839 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-1839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1839?: CVE-2011-1839 affects Ibm Rational Build Forge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-1839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1839 published?: CVE-2011-1839 was published on 2011-04-28 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ibm:rational_build_forge:7.1.0:*:*:*:*:*:*:*

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