How severe is CVE-2022-26652?

CVE-2022-26652 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2022-26652 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-26652?

CVE-2022-26652 primarily affects Linuxfoundation Nats-server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-26652?

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

When was CVE-2022-26652 published?

CVE-2022-26652 was published on 2022-03-10 and last updated on 2026-06-17.

CVE-2022-26652

CVE-2022-26652 is a medium-severity vulnerability in Linuxfoundation Nats-server with a CVSS 3.x base score of 6.5. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Linuxfoundation Nats-server
Published: 2022-03-10
Last modified: 2026-06-17

Description

NATS nats-server before 2.7.4 allows Directory Traversal (with write access) via an element in a ZIP archive for JetStream streams. nats-streaming-server before 0.24.3 is also affected.

Frequently asked questions

What is CVE-2022-26652?: NATS nats-server before 2.7.4 allows Directory Traversal (with write access) via an element in a ZIP archive for JetStream streams. nats-streaming-server before 0.24.3 is also affected.
How severe is CVE-2022-26652?: CVE-2022-26652 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2022-26652 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-26652?: CVE-2022-26652 primarily affects Linuxfoundation Nats-server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-26652?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-26652 published?: CVE-2022-26652 was published on 2022-03-10 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
cpe:2.3:a:nats:nats_streaming_server:*:*:*:*:*:*:*:*

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