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CVE-2026-15325· NVD / CVE Program· CNA ibm

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP request smuggling due to improper handling of TRACE requests.

HighCVSS 8.7 · v3.1—No exploit No fix recorded
Published
Jul 28, 2026
Updated
Aug 6, 2026
EPSS
0.3% · 25th percentile
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Report tools

JSON

Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · ibm
8.7
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
ibmwebsphere application server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ibm websphere application server8.5.0.0 and later · before 8.5.5.31
  • ibm websphere application server9.0.0.0 and later · before 9.0.5.29
  • ibm websphere application server17.0.0.3 and later · before 26.0.0.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

  • IBM WebSphere Application Server

    • 9.0, 8.5affected

  • IBM WebSphere Application Server - Liberty

    • 17.0.0.3 and later · up to and including 26.0.0.7affected · semver

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-4279IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted
    63This week
  • CVE-2020-4450IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specia
    49Plan
  • CVE-2025-36038IBM WebSphere Application Server code execution
    43Plan
  • CVE-2020-4448IBM WebSphere Application Server Network Deployment 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to execute arbitrary code on the sy
    43Plan
  • CVE-2020-4589IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to execute arbitrary code on the system with a special
    42Plan
  • CVE-2015-1920IBM WebSphere Application Server (WAS) 6.1 through 6.1.0.47, 7.0 before 7.0.0.39, 8.0 before 8.0.0.11, and 8.5 before 8.5.5.6 allows remote
    42Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-1154128 days apartInconsistent Interpretation of HTTP Requests in CICS Transaction Gateway for Multiplatforms.
    39Monitor
  • CVE-2026-864636 days apartIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities
    36Monitor
  • CVE-2026-150640 days apartIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities
    34Monitor
  • CVE-2026-153280 days apartIBM WebSphere Application Server and WebSphere Application Server Liberty is inconsistent Interpretation of HTTP Requests
    32Monitor
  • CVE-2026-1180628 days apartIBM WebSphere Application Server Liberty is affected by a an arbitrary file read vulnerability
    30Monitor
  • CVE-2026-862063 days apartIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities when using when using Web Server Plug-ins
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records