How severe is CVE-2023-3635?

CVE-2023-3635 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-3635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3635?

CVE-2023-3635 affects Squareup Okio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3635?

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

When was CVE-2023-3635 published?

CVE-2023-3635 was published on 2023-07-12 and last updated on 2026-06-17.

CVE-2023-3635

CVE-2023-3635 is a medium-severity vulnerability in Squareup Okio with a CVSS 3.x base score of 5.9. 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-681.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-681
Affected product: Squareup Okio
Published: 2023-07-12
Last modified: 2026-06-17

Description

GzipSource does not handle an exception that might be raised when parsing a malformed gzip buffer. This may lead to denial of service of the Okio client when handling a crafted GZIP archive, by using the GzipSource class.

Frequently asked questions

What is CVE-2023-3635?: GzipSource does not handle an exception that might be raised when parsing a malformed gzip buffer. This may lead to denial of service of the Okio client when handling a crafted GZIP archive, by using the GzipSource class.
How severe is CVE-2023-3635?: CVE-2023-3635 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-3635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3635?: CVE-2023-3635 affects Squareup Okio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-3635 published?: CVE-2023-3635 was published on 2023-07-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:squareup:okio:*:*:*:*:*:*:*:*

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