How severe is CVE-2026-4742?

CVE-2026-4742 has a CVSS 4.0 base score of 2.9, rated low severity.

Is CVE-2026-4742 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4742?

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

Does CVE-2026-4742 have an EU (EUVD) identifier?

Yes. CVE-2026-4742 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14701.

When was CVE-2026-4742 published?

CVE-2026-4742 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-4742

CVE-2026-4742 is a low-severity vulnerability with a CVSS 4.0 base score of 2.9. 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-444.

Key facts

Severity: Low (CVSS 4.0 base score 2.9)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14701
Weakness: CWE-444
Published: 2026-03-24
Last modified: 2026-06-17

Description

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in visualfc liteide (liteidex/src/3rdparty/qjsonrpc/src/http-parser modules). This vulnerability is associated with program files http_parser.C. This issue affects liteide: before x38.4.

Frequently asked questions

What is CVE-2026-4742?: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in visualfc liteide (liteidex/src/3rdparty/qjsonrpc/src/http-parser modules). This vulnerability is associated with program files http_parser.C. This issue affects liteide: before x38.4.
How severe is CVE-2026-4742?: CVE-2026-4742 has a CVSS 4.0 base score of 2.9, rated low severity.
Is CVE-2026-4742 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4742?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4742 have an EU (EUVD) identifier?: Yes. CVE-2026-4742 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14701.
When was CVE-2026-4742 published?: CVE-2026-4742 was published on 2026-03-24 and last updated on 2026-06-17.

References

https://github.com/visualfc/liteide/pull/1325

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