How severe is CVE-2018-1549?

CVE-2018-1549 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-1549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1549?

CVE-2018-1549 affects Ibm Rational Quality Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1549?

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

When was CVE-2018-1549 published?

CVE-2018-1549 was published on 2018-07-10 and last updated on 2026-06-17.

CVE-2018-1549

CVE-2018-1549 is a medium-severity vulnerability in Ibm Rational Quality Manager with a CVSS 3.x base score of 5.4. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.9
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Ibm Rational Quality Manager
Published: 2018-07-10
Last modified: 2026-06-17

Description

IBM Rational Quality Manager 5.0 through 5.0.2 and 6.0 through 6.0.5 are vulnerable to HTTP response splitting attacks. A remote attacker could exploit this vulnerability using specially-crafted URL to cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning, cross-site scripting, and possibly obtain sensitive information. IBM X-Force ID: 142658.

Frequently asked questions

What is CVE-2018-1549?: IBM Rational Quality Manager 5.0 through 5.0.2 and 6.0 through 6.0.5 are vulnerable to HTTP response splitting attacks. A remote attacker could exploit this vulnerability using specially-crafted URL to cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning, cross-site scripting, and possibly obtain sensitive information. IBM X-Force ID: 142658.
How severe is CVE-2018-1549?: CVE-2018-1549 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-1549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1549?: CVE-2018-1549 affects Ibm Rational Quality Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1549 published?: CVE-2018-1549 was published on 2018-07-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:rational_quality_manager:*:*:*:*:*:*:*:*

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