How severe is CVE-2026-65370?

CVE-2026-65370 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 none, integrity high, and availability none.

Is CVE-2026-65370 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-65370?

CVE-2026-65370 affects Apple Servicetalk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-65370?

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-2026-65370 published?

CVE-2026-65370 was published on 2026-08-12 and last updated on 2026-09-03.

CVE-2026-65370

CVE-2026-65370 is a high-severity vulnerability in Apple Servicetalk 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-444.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-444
Affected product: Apple Servicetalk
Published: 2026-08-12
Last modified: 2026-09-03

Description

ServiceTalk HTTP/1.x incorrectly handles malformed Transfer-Encoding which could result in request smuggling attacks. This vulnerability is addressed in servicetalk version 0.42.65.

Frequently asked questions

What is CVE-2026-65370?: ServiceTalk HTTP/1.x incorrectly handles malformed Transfer-Encoding which could result in request smuggling attacks. This vulnerability is addressed in servicetalk version 0.42.65.
How severe is CVE-2026-65370?: CVE-2026-65370 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 none, integrity high, and availability none.
Is CVE-2026-65370 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-65370?: CVE-2026-65370 affects Apple Servicetalk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-65370?: 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-2026-65370 published?: CVE-2026-65370 was published on 2026-08-12 and last updated on 2026-09-03.

References

https://github.com/apple/servicetalk/security/advisories/GHSA-56h2-h3h4-m9x6

Affected products (1)

cpe:2.3:a:apple:servicetalk:*:*:*:*:*:*:*:*

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