How severe is CVE-2016-2923?

CVE-2016-2923 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-2923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-2923?

CVE-2016-2923 primarily affects Ibm Websphere Application Server. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-2923?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-2923 published?

CVE-2016-2923 was published on 2016-07-07 and last updated on 2026-06-17.

CVE-2016-2923

CVE-2016-2923 is a high-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Ibm Websphere Application Server
Published: 2016-07-07
Last modified: 2026-06-17

Description

IBM WebSphere Application Server (WAS) 8.5 through 8.5.5.9 Liberty before Liberty Fix Pack 16.0.0.2 does not include the HTTPOnly flag in a Set-Cookie header for an unspecified JAX-RS API cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie.

Frequently asked questions

What is CVE-2016-2923?: IBM WebSphere Application Server (WAS) 8.5 through 8.5.5.9 Liberty before Liberty Fix Pack 16.0.0.2 does not include the HTTPOnly flag in a Set-Cookie header for an unspecified JAX-RS API cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie.
How severe is CVE-2016-2923?: CVE-2016-2923 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-2923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-2923?: CVE-2016-2923 primarily affects Ibm Websphere Application Server. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-2923?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-2923 published?: CVE-2016-2923 was published on 2016-07-07 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:ibm:websphere_application_server:8.5.5.0:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.1:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.2:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.3:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.4:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.5:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.6:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.7:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.8:*:*:*:liberty:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5.5.9:*:*:*:liberty:*:*:*

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